Sourced from github.com/jackc/pgx/v5's changelog.

5.9.2 (April 18, 2026)

Fix SQL Injection via placeholder confusion with dollar quoted string literals (GHSA-j88v-2chj-qfwx)

SQL injection can occur when:

1. The non-default simple protocol is used.
2. A dollar quoted string literal is used in the SQL query.
3. That query contains text that would be would be interpreted outside as a placeholder outside of a string literal.
4. The value of that placeholder is controllable by the attacker.

e.g.

attackValue := `$tag$; drop table canary; --`
_, err = tx.Exec(ctx, `select $tag$ $1 $tag$, $1`, pgx.QueryExecModeSimpleProtocol, attackValue)

This is unlikely to occur outside of a contrived scenario.

5.9.1 (March 22, 2026)

• Fix: batch result format corruption when using cached prepared statements (reported by Dirkjan Bussink)

5.9.0 (March 21, 2026)

This release includes a number of new features such as SCRAM-SHA-256-PLUS support, OAuth authentication support, and PostgreSQL protocol 3.2 support.

It significantly reduces the amount of network traffic when using prepared statements (which are used automatically by default) by avoiding unnecessary Describe Portal messages. This also reduces local memory usage.

It also includes multiple fixes for potential DoS due to panic or OOM if connected to a malicious server that sends deliberately malformed messages.

• Require Go 1.25+
• Add SCRAM-SHA-256-PLUS support (Adam Brightwell)
• Add OAuth authentication support for PostgreSQL 18 (David Schneider)
• Add PostgreSQL protocol 3.2 support (Dirkjan Bussink)
• Add tsvector type support (Adam Brightwell)
• Skip Describe Portal for cached prepared statements reducing network round trips
• Make LoadTypes query easier to support on "postgres-like" servers (Jelte Fennema-Nio)
• Default empty user to current OS user matching libpq behavior (ShivangSrivastava)
• Optimize LRU statement cache with custom linked list and node pooling (Mathias Bogaert)
• Optimize date scanning by replacing regex with manual parsing (Mathias Bogaert)
• Optimize pgio append/set functions with direct byte shifts (Mathias Bogaert)
• Make RowsAffected faster (Abhishek Chanda)
• Fix: Pipeline.Close panic when server sends multiple FATAL errors (Varun Chawla)
• Fix: ContextWatcher goroutine leak (Hank Donnay)
• Fix: stdlib discard connections with open transactions in ResetSession (Jeremy Schneider)

... (truncated)

• 0aeabbc Release v5.9.2
• 60644f8 Fix SQL sanitizer bugs with dollar-quoted strings and placeholder overflow
• a5680bc Merge pull request #2531 from dolmen-go/godoc-add-links
• e34e452 doc: Add godoc links
• 08c9bb1 Fix Stringer types encoded as text instead of numeric value in composite fields
• 96b4dbd Remove unstable test
• acf88e0 Merge pull request #2526 from abrightwell/abrightwell-min-proto
• 2f81f1f Update max_protocol_version and min_protocol_version defaults
• 4e4eaed Release v5.9.1
• 6273188 Fix batch result format corruption when using cached prepared statements
• Additional commits viewable in compare view

Sourced from github.com/jackc/pgx/v5's changelog.

5.9.2 (April 18, 2026)

Fix SQL Injection via placeholder confusion with dollar quoted string literals (GHSA-j88v-2chj-qfwx)

SQL injection can occur when:

1. The non-default simple protocol is used.
2. A dollar quoted string literal is used in the SQL query.
3. That query contains text that would be would be interpreted outside as a placeholder outside of a string literal.
4. The value of that placeholder is controllable by the attacker.

e.g.

attackValue := `$tag$; drop table canary; --`
_, err = tx.Exec(ctx, `select $tag$ $1 $tag$, $1`, pgx.QueryExecModeSimpleProtocol, attackValue)

This is unlikely to occur outside of a contrived scenario.

5.9.1 (March 22, 2026)

• Fix: batch result format corruption when using cached prepared statements (reported by Dirkjan Bussink)

5.9.0 (March 21, 2026)

This release includes a number of new features such as SCRAM-SHA-256-PLUS support, OAuth authentication support, and PostgreSQL protocol 3.2 support.

It significantly reduces the amount of network traffic when using prepared statements (which are used automatically by default) by avoiding unnecessary Describe Portal messages. This also reduces local memory usage.

It also includes multiple fixes for potential DoS due to panic or OOM if connected to a malicious server that sends deliberately malformed messages.

• Require Go 1.25+
• Add SCRAM-SHA-256-PLUS support (Adam Brightwell)
• Add OAuth authentication support for PostgreSQL 18 (David Schneider)
• Add PostgreSQL protocol 3.2 support (Dirkjan Bussink)
• Add tsvector type support (Adam Brightwell)
• Skip Describe Portal for cached prepared statements reducing network round trips
• Make LoadTypes query easier to support on "postgres-like" servers (Jelte Fennema-Nio)
• Default empty user to current OS user matching libpq behavior (ShivangSrivastava)
• Optimize LRU statement cache with custom linked list and node pooling (Mathias Bogaert)
• Optimize date scanning by replacing regex with manual parsing (Mathias Bogaert)
• Optimize pgio append/set functions with direct byte shifts (Mathias Bogaert)
• Make RowsAffected faster (Abhishek Chanda)
• Fix: Pipeline.Close panic when server sends multiple FATAL errors (Varun Chawla)
• Fix: ContextWatcher goroutine leak (Hank Donnay)
• Fix: stdlib discard connections with open transactions in ResetSession (Jeremy Schneider)

... (truncated)

• 0aeabbc Release v5.9.2
• 60644f8 Fix SQL sanitizer bugs with dollar-quoted strings and placeholder overflow
• a5680bc Merge pull request #2531 from dolmen-go/godoc-add-links
• e34e452 doc: Add godoc links
• 08c9bb1 Fix Stringer types encoded as text instead of numeric value in composite fields
• 96b4dbd Remove unstable test
• acf88e0 Merge pull request #2526 from abrightwell/abrightwell-min-proto
• 2f81f1f Update max_protocol_version and min_protocol_version defaults
• 4e4eaed Release v5.9.1
• 6273188 Fix batch result format corruption when using cached prepared statements
• Additional commits viewable in compare view

Sourced from github.com/jackc/pgx/v5's changelog.

5.9.2 (April 18, 2026)

Fix SQL Injection via placeholder confusion with dollar quoted string literals (GHSA-j88v-2chj-qfwx)

SQL injection can occur when:

1. The non-default simple protocol is used.
2. A dollar quoted string literal is used in the SQL query.
3. That query contains text that would be would be interpreted outside as a placeholder outside of a string literal.
4. The value of that placeholder is controllable by the attacker.

e.g.

attackValue := `$tag$; drop table canary; --`
_, err = tx.Exec(ctx, `select $tag$ $1 $tag$, $1`, pgx.QueryExecModeSimpleProtocol, attackValue)

This is unlikely to occur outside of a contrived scenario.

5.9.1 (March 22, 2026)

• Fix: batch result format corruption when using cached prepared statements (reported by Dirkjan Bussink)

5.9.0 (March 21, 2026)

This release includes a number of new features such as SCRAM-SHA-256-PLUS support, OAuth authentication support, and PostgreSQL protocol 3.2 support.

It significantly reduces the amount of network traffic when using prepared statements (which are used automatically by default) by avoiding unnecessary Describe Portal messages. This also reduces local memory usage.

It also includes multiple fixes for potential DoS due to panic or OOM if connected to a malicious server that sends deliberately malformed messages.

• Require Go 1.25+
• Add SCRAM-SHA-256-PLUS support (Adam Brightwell)
• Add OAuth authentication support for PostgreSQL 18 (David Schneider)
• Add PostgreSQL protocol 3.2 support (Dirkjan Bussink)
• Add tsvector type support (Adam Brightwell)
• Skip Describe Portal for cached prepared statements reducing network round trips
• Make LoadTypes query easier to support on "postgres-like" servers (Jelte Fennema-Nio)
• Default empty user to current OS user matching libpq behavior (ShivangSrivastava)
• Optimize LRU statement cache with custom linked list and node pooling (Mathias Bogaert)
• Optimize date scanning by replacing regex with manual parsing (Mathias Bogaert)
• Optimize pgio append/set functions with direct byte shifts (Mathias Bogaert)
• Make RowsAffected faster (Abhishek Chanda)
• Fix: Pipeline.Close panic when server sends multiple FATAL errors (Varun Chawla)
• Fix: ContextWatcher goroutine leak (Hank Donnay)
• Fix: stdlib discard connections with open transactions in ResetSession (Jeremy Schneider)

... (truncated)

• 0aeabbc Release v5.9.2
• 60644f8 Fix SQL sanitizer bugs with dollar-quoted strings and placeholder overflow
• a5680bc Merge pull request #2531 from dolmen-go/godoc-add-links
• e34e452 doc: Add godoc links
• 08c9bb1 Fix Stringer types encoded as text instead of numeric value in composite fields
• 96b4dbd Remove unstable test
• acf88e0 Merge pull request #2526 from abrightwell/abrightwell-min-proto
• 2f81f1f Update max_protocol_version and min_protocol_version defaults
• 4e4eaed Release v5.9.1
• 6273188 Fix batch result format corruption when using cached prepared statements
• Additional commits viewable in compare view

Sourced from github.com/jackc/pgx/v5's changelog.

5.9.2 (April 18, 2026)

Fix SQL Injection via placeholder confusion with dollar quoted string literals (GHSA-j88v-2chj-qfwx)

SQL injection can occur when:

1. The non-default simple protocol is used.
2. A dollar quoted string literal is used in the SQL query.
3. That query contains text that would be would be interpreted outside as a placeholder outside of a string literal.
4. The value of that placeholder is controllable by the attacker.

e.g.

attackValue := `$tag$; drop table canary; --`
_, err = tx.Exec(ctx, `select $tag$ $1 $tag$, $1`, pgx.QueryExecModeSimpleProtocol, attackValue)

This is unlikely to occur outside of a contrived scenario.

5.9.1 (March 22, 2026)

• Fix: batch result format corruption when using cached prepared statements (reported by Dirkjan Bussink)

5.9.0 (March 21, 2026)

This release includes a number of new features such as SCRAM-SHA-256-PLUS support, OAuth authentication support, and PostgreSQL protocol 3.2 support.

It significantly reduces the amount of network traffic when using prepared statements (which are used automatically by default) by avoiding unnecessary Describe Portal messages. This also reduces local memory usage.

It also includes multiple fixes for potential DoS due to panic or OOM if connected to a malicious server that sends deliberately malformed messages.

• Require Go 1.25+
• Add SCRAM-SHA-256-PLUS support (Adam Brightwell)
• Add OAuth authentication support for PostgreSQL 18 (David Schneider)
• Add PostgreSQL protocol 3.2 support (Dirkjan Bussink)
• Add tsvector type support (Adam Brightwell)
• Skip Describe Portal for cached prepared statements reducing network round trips
• Make LoadTypes query easier to support on "postgres-like" servers (Jelte Fennema-Nio)
• Default empty user to current OS user matching libpq behavior (ShivangSrivastava)
• Optimize LRU statement cache with custom linked list and node pooling (Mathias Bogaert)
• Optimize date scanning by replacing regex with manual parsing (Mathias Bogaert)
• Optimize pgio append/set functions with direct byte shifts (Mathias Bogaert)
• Make RowsAffected faster (Abhishek Chanda)
• Fix: Pipeline.Close panic when server sends multiple FATAL errors (Varun Chawla)
• Fix: ContextWatcher goroutine leak (Hank Donnay)
• Fix: stdlib discard connections with open transactions in ResetSession (Jeremy Schneider)

... (truncated)

• 0aeabbc Release v5.9.2
• 60644f8 Fix SQL sanitizer bugs with dollar-quoted strings and placeholder overflow
• a5680bc Merge pull request #2531 from dolmen-go/godoc-add-links
• e34e452 doc: Add godoc links
• 08c9bb1 Fix Stringer types encoded as text instead of numeric value in composite fields
• 96b4dbd Remove unstable test
• acf88e0 Merge pull request #2526 from abrightwell/abrightwell-min-proto
• 2f81f1f Update max_protocol_version and min_protocol_version defaults
• 4e4eaed Release v5.9.1
• 6273188 Fix batch result format corruption when using cached prepared statements
• Additional commits viewable in compare view

Sourced from github.com/jackc/pgx/v5's changelog.

5.9.2 (April 18, 2026)

Fix SQL Injection via placeholder confusion with dollar quoted string literals (GHSA-j88v-2chj-qfwx)

SQL injection can occur when:

1. The non-default simple protocol is used.
2. A dollar quoted string literal is used in the SQL query.
3. That query contains text that would be would be interpreted outside as a placeholder outside of a string literal.
4. The value of that placeholder is controllable by the attacker.

e.g.

attackValue := `$tag$; drop table canary; --`
_, err = tx.Exec(ctx, `select $tag$ $1 $tag$, $1`, pgx.QueryExecModeSimpleProtocol, attackValue)

This is unlikely to occur outside of a contrived scenario.

5.9.1 (March 22, 2026)

• Fix: batch result format corruption when using cached prepared statements (reported by Dirkjan Bussink)

5.9.0 (March 21, 2026)

This release includes a number of new features such as SCRAM-SHA-256-PLUS support, OAuth authentication support, and PostgreSQL protocol 3.2 support.

It significantly reduces the amount of network traffic when using prepared statements (which are used automatically by default) by avoiding unnecessary Describe Portal messages. This also reduces local memory usage.

It also includes multiple fixes for potential DoS due to panic or OOM if connected to a malicious server that sends deliberately malformed messages.

• Require Go 1.25+
• Add SCRAM-SHA-256-PLUS support (Adam Brightwell)
• Add OAuth authentication support for PostgreSQL 18 (David Schneider)
• Add PostgreSQL protocol 3.2 support (Dirkjan Bussink)
• Add tsvector type support (Adam Brightwell)
• Skip Describe Portal for cached prepared statements reducing network round trips
• Make LoadTypes query easier to support on "postgres-like" servers (Jelte Fennema-Nio)
• Default empty user to current OS user matching libpq behavior (ShivangSrivastava)
• Optimize LRU statement cache with custom linked list and node pooling (Mathias Bogaert)
• Optimize date scanning by replacing regex with manual parsing (Mathias Bogaert)
• Optimize pgio append/set functions with direct byte shifts (Mathias Bogaert)
• Make RowsAffected faster (Abhishek Chanda)
• Fix: Pipeline.Close panic when server sends multiple FATAL errors (Varun Chawla)
• Fix: ContextWatcher goroutine leak (Hank Donnay)
• Fix: stdlib discard connections with open transactions in ResetSession (Jeremy Schneider)

... (truncated)

• 0aeabbc Release v5.9.2
• 60644f8 Fix SQL sanitizer bugs with dollar-quoted strings and placeholder overflow
• a5680bc Merge pull request #2531 from dolmen-go/godoc-add-links
• e34e452 doc: Add godoc links
• 08c9bb1 Fix Stringer types encoded as text instead of numeric value in composite fields
• 96b4dbd Remove unstable test
• acf88e0 Merge pull request #2526 from abrightwell/abrightwell-min-proto
• 2f81f1f Update max_protocol_version and min_protocol_version defaults
• 4e4eaed Release v5.9.1
• 6273188 Fix batch result format corruption when using cached prepared statements
• Additional commits viewable in compare view

Sourced from github.com/jackc/pgx/v5's changelog.

5.9.2 (April 18, 2026)

Fix SQL Injection via placeholder confusion with dollar quoted string literals (GHSA-j88v-2chj-qfwx)

SQL injection can occur when:

1. The non-default simple protocol is used.
2. A dollar quoted string literal is used in the SQL query.
3. That query contains text that would be would be interpreted outside as a placeholder outside of a string literal.
4. The value of that placeholder is controllable by the attacker.

e.g.

attackValue := `$tag$; drop table canary; --`
_, err = tx.Exec(ctx, `select $tag$ $1 $tag$, $1`, pgx.QueryExecModeSimpleProtocol, attackValue)

This is unlikely to occur outside of a contrived scenario.

5.9.1 (March 22, 2026)

• Fix: batch result format corruption when using cached prepared statements (reported by Dirkjan Bussink)

5.9.0 (March 21, 2026)

This release includes a number of new features such as SCRAM-SHA-256-PLUS support, OAuth authentication support, and PostgreSQL protocol 3.2 support.

It significantly reduces the amount of network traffic when using prepared statements (which are used automatically by default) by avoiding unnecessary Describe Portal messages. This also reduces local memory usage.

It also includes multiple fixes for potential DoS due to panic or OOM if connected to a malicious server that sends deliberately malformed messages.

• Require Go 1.25+
• Add SCRAM-SHA-256-PLUS support (Adam Brightwell)
• Add OAuth authentication support for PostgreSQL 18 (David Schneider)
• Add PostgreSQL protocol 3.2 support (Dirkjan Bussink)
• Add tsvector type support (Adam Brightwell)
• Skip Describe Portal for cached prepared statements reducing network round trips
• Make LoadTypes query easier to support on "postgres-like" servers (Jelte Fennema-Nio)
• Default empty user to current OS user matching libpq behavior (ShivangSrivastava)
• Optimize LRU statement cache with custom linked list and node pooling (Mathias Bogaert)
• Optimize date scanning by replacing regex with manual parsing (Mathias Bogaert)
• Optimize pgio append/set functions with direct byte shifts (Mathias Bogaert)
• Make RowsAffected faster (Abhishek Chanda)
• Fix: Pipeline.Close panic when server sends multiple FATAL errors (Varun Chawla)
• Fix: ContextWatcher goroutine leak (Hank Donnay)
• Fix: stdlib discard connections with open transactions in ResetSession (Jeremy Schneider)

... (truncated)

• 0aeabbc Release v5.9.2
• 60644f8 Fix SQL sanitizer bugs with dollar-quoted strings and placeholder overflow
• a5680bc Merge pull request #2531 from dolmen-go/godoc-add-links
• e34e452 doc: Add godoc links
• 08c9bb1 Fix Stringer types encoded as text instead of numeric value in composite fields
• 96b4dbd Remove unstable test
• acf88e0 Merge pull request #2526 from abrightwell/abrightwell-min-proto
• 2f81f1f Update max_protocol_version and min_protocol_version defaults
• 4e4eaed Release v5.9.1
• 6273188 Fix batch result format corruption when using cached prepared statements
• Additional commits viewable in compare view

Sourced from github.com/jackc/pgx/v5's changelog.

5.9.2 (April 18, 2026)

Fix SQL Injection via placeholder confusion with dollar quoted string literals (GHSA-j88v-2chj-qfwx)

SQL injection can occur when:

1. The non-default simple protocol is used.
2. A dollar quoted string literal is used in the SQL query.
3. That query contains text that would be would be interpreted outside as a placeholder outside of a string literal.
4. The value of that placeholder is controllable by the attacker.

e.g.

attackValue := `$tag$; drop table canary; --`
_, err = tx.Exec(ctx, `select $tag$ $1 $tag$, $1`, pgx.QueryExecModeSimpleProtocol, attackValue)

This is unlikely to occur outside of a contrived scenario.

5.9.1 (March 22, 2026)

• Fix: batch result format corruption when using cached prepared statements (reported by Dirkjan Bussink)

5.9.0 (March 21, 2026)

This release includes a number of new features such as SCRAM-SHA-256-PLUS support, OAuth authentication support, and PostgreSQL protocol 3.2 support.

It significantly reduces the amount of network traffic when using prepared statements (which are used automatically by default) by avoiding unnecessary Describe Portal messages. This also reduces local memory usage.

It also includes multiple fixes for potential DoS due to panic or OOM if connected to a malicious server that sends deliberately malformed messages.

• Require Go 1.25+
• Add SCRAM-SHA-256-PLUS support (Adam Brightwell)
• Add OAuth authentication support for PostgreSQL 18 (David Schneider)
• Add PostgreSQL protocol 3.2 support (Dirkjan Bussink)
• Add tsvector type support (Adam Brightwell)
• Skip Describe Portal for cached prepared statements reducing network round trips
• Make LoadTypes query easier to support on "postgres-like" servers (Jelte Fennema-Nio)
• Default empty user to current OS user matching libpq behavior (ShivangSrivastava)
• Optimize LRU statement cache with custom linked list and node pooling (Mathias Bogaert)
• Optimize date scanning by replacing regex with manual parsing (Mathias Bogaert)
• Optimize pgio append/set functions with direct byte shifts (Mathias Bogaert)
• Make RowsAffected faster (Abhishek Chanda)
• Fix: Pipeline.Close panic when server sends multiple FATAL errors (Varun Chawla)
• Fix: ContextWatcher goroutine leak (Hank Donnay)
• Fix: stdlib discard connections with open transactions in ResetSession (Jeremy Schneider)

... (truncated)

• 0aeabbc Release v5.9.2
• 60644f8 Fix SQL sanitizer bugs with dollar-quoted strings and placeholder overflow
• a5680bc Merge pull request #2531 from dolmen-go/godoc-add-links
• e34e452 doc: Add godoc links
• 08c9bb1 Fix Stringer types encoded as text instead of numeric value in composite fields
• 96b4dbd Remove unstable test
• acf88e0 Merge pull request #2526 from abrightwell/abrightwell-min-proto
• 2f81f1f Update max_protocol_version and min_protocol_version defaults
• 4e4eaed Release v5.9.1
• 6273188 Fix batch result format corruption when using cached prepared statements
• Additional commits viewable in compare view

Sourced from github.com/jackc/pgx/v5's changelog.

5.9.2 (April 18, 2026)

Fix SQL Injection via placeholder confusion with dollar quoted string literals (GHSA-j88v-2chj-qfwx)

SQL injection can occur when:

1. The non-default simple protocol is used.
2. A dollar quoted string literal is used in the SQL query.
3. That query contains text that would be would be interpreted outside as a placeholder outside of a string literal.
4. The value of that placeholder is controllable by the attacker.

e.g.

attackValue := `$tag$; drop table canary; --`
_, err = tx.Exec(ctx, `select $tag$ $1 $tag$, $1`, pgx.QueryExecModeSimpleProtocol, attackValue)

This is unlikely to occur outside of a contrived scenario.

5.9.1 (March 22, 2026)

• Fix: batch result format corruption when using cached prepared statements (reported by Dirkjan Bussink)

5.9.0 (March 21, 2026)

This release includes a number of new features such as SCRAM-SHA-256-PLUS support, OAuth authentication support, and PostgreSQL protocol 3.2 support.

It significantly reduces the amount of network traffic when using prepared statements (which are used automatically by default) by avoiding unnecessary Describe Portal messages. This also reduces local memory usage.

It also includes multiple fixes for potential DoS due to panic or OOM if connected to a malicious server that sends deliberately malformed messages.

• Require Go 1.25+
• Add SCRAM-SHA-256-PLUS support (Adam Brightwell)
• Add OAuth authentication support for PostgreSQL 18 (David Schneider)
• Add PostgreSQL protocol 3.2 support (Dirkjan Bussink)
• Add tsvector type support (Adam Brightwell)
• Skip Describe Portal for cached prepared statements reducing network round trips
• Make LoadTypes query easier to support on "postgres-like" servers (Jelte Fennema-Nio)
• Default empty user to current OS user matching libpq behavior (ShivangSrivastava)
• Optimize LRU statement cache with custom linked list and node pooling (Mathias Bogaert)
• Optimize date scanning by replacing regex with manual parsing (Mathias Bogaert)
• Optimize pgio append/set functions with direct byte shifts (Mathias Bogaert)
• Make RowsAffected faster (Abhishek Chanda)
• Fix: Pipeline.Close panic when server sends multiple FATAL errors (Varun Chawla)
• Fix: ContextWatcher goroutine leak (Hank Donnay)
• Fix: stdlib discard connections with open transactions in ResetSession (Jeremy Schneider)

... (truncated)

• 0aeabbc Release v5.9.2
• 60644f8 Fix SQL sanitizer bugs with dollar-quoted strings and placeholder overflow
• a5680bc Merge pull request #2531 from dolmen-go/godoc-add-links
• e34e452 doc: Add godoc links
• 08c9bb1 Fix Stringer types encoded as text instead of numeric value in composite fields
• 96b4dbd Remove unstable test
• acf88e0 Merge pull request #2526 from abrightwell/abrightwell-min-proto
• 2f81f1f Update max_protocol_version and min_protocol_version defaults
• 4e4eaed Release v5.9.1
• 6273188 Fix batch result format corruption when using cached prepared statements
• Additional commits viewable in compare view

Sourced from github.com/jackc/pgx/v5's changelog.

5.9.2 (April 18, 2026)

Fix SQL Injection via placeholder confusion with dollar quoted string literals (GHSA-j88v-2chj-qfwx)

SQL injection can occur when:

1. The non-default simple protocol is used.
2. A dollar quoted string literal is used in the SQL query.
3. That query contains text that would be would be interpreted outside as a placeholder outside of a string literal.
4. The value of that placeholder is controllable by the attacker.

e.g.

attackValue := `$tag$; drop table canary; --`
_, err = tx.Exec(ctx, `select $tag$ $1 $tag$, $1`, pgx.QueryExecModeSimpleProtocol, attackValue)

This is unlikely to occur outside of a contrived scenario.

5.9.1 (March 22, 2026)

• Fix: batch result format corruption when using cached prepared statements (reported by Dirkjan Bussink)

5.9.0 (March 21, 2026)

This release includes a number of new features such as SCRAM-SHA-256-PLUS support, OAuth authentication support, and PostgreSQL protocol 3.2 support.

It significantly reduces the amount of network traffic when using prepared statements (which are used automatically by default) by avoiding unnecessary Describe Portal messages. This also reduces local memory usage.

It also includes multiple fixes for potential DoS due to panic or OOM if connected to a malicious server that sends deliberately malformed messages.

• Require Go 1.25+
• Add SCRAM-SHA-256-PLUS support (Adam Brightwell)
• Add OAuth authentication support for PostgreSQL 18 (David Schneider)
• Add PostgreSQL protocol 3.2 support (Dirkjan Bussink)
• Add tsvector type support (Adam Brightwell)
• Skip Describe Portal for cached prepared statements reducing network round trips
• Make LoadTypes query easier to support on "postgres-like" servers (Jelte Fennema-Nio)
• Default empty user to current OS user matching libpq behavior (ShivangSrivastava)
• Optimize LRU statement cache with custom linked list and node pooling (Mathias Bogaert)
• Optimize date scanning by replacing regex with manual parsing (Mathias Bogaert)
• Optimize pgio append/set functions with direct byte shifts (Mathias Bogaert)
• Make RowsAffected faster (Abhishek Chanda)
• Fix: Pipeline.Close panic when server sends multiple FATAL errors (Varun Chawla)
• Fix: ContextWatcher goroutine leak (Hank Donnay)
• Fix: stdlib discard connections with open transactions in ResetSession (Jeremy Schneider)

... (truncated)

• 0aeabbc Release v5.9.2
• 60644f8 Fix SQL sanitizer bugs with dollar-quoted strings and placeholder overflow
• a5680bc Merge pull request #2531 from dolmen-go/godoc-add-links
• e34e452 doc: Add godoc links
• 08c9bb1 Fix Stringer types encoded as text instead of numeric value in composite fields
• 96b4dbd Remove unstable test
• acf88e0 Merge pull request #2526 from abrightwell/abrightwell-min-proto
• 2f81f1f Update max_protocol_version and min_protocol_version defaults
• 4e4eaed Release v5.9.1
• 6273188 Fix batch result format corruption when using cached prepared statements
• Additional commits viewable in compare view

Sourced from github.com/nats-io/nats-server/v2's releases.

Release v2.12.6

Changelog

Refer to the 2.12 Upgrade Guide for backwards compatibility notes with 2.11.x.

Go Version

• 1.25.8

Dependencies

• golang.org/x/crypto v0.49.0 (#7953)
• github.com/nats-io/jwt/v2 v2.8.1 (#7960)
• golang.org/x/sys v0.42.0 (#7923)
• golang.org/x/time v0.15.0 (#7923)

CVEs

• Fixes CVE-2026-33216, CVE-2026-33217, CVE-2026-33215 (affecting systems using MQTT)
• Fixes CVE-2026-33246 (affects systems using leafnodes and service imports)
• Fixes CVE-2026-33218 (affects systems using leafnodes)
• Fixes CVE-2026-33219 (affects systems using WebSockets)
• Fixes CVE-2026-33223, CVE-2026-33222 (affects systems using JetStream)
• Fixes CVE-2026-33248 (affects systems using mutual TLS)
• Fixes CVE-2026-33247 (affects systems providing credentials on the command line)
• Fixes CVE-2026-33249 (affects systems where client publish permissions should be restricted)

Changed

General

• There is now a 1MB size limit on JWTs (#7960)

Improved

General

• Non-WebSocket leafnode connections can now be proxied using HTTP CONNECT (#7781)
• The $SYS.REQ.USER.INFO response now includes the friendly nametag of the account and/or user if known (#7973)

JetStream

• The stream peer-remove command now accepts a peer ID as well as a server name (#7952)

MQTT

• Protocol compliance has been improved, including more error handling on invalid or malformed MQTT packets (#7933)

Fixed

... (truncated)

• 0e06390 Release v2.12.6
• f593d27 Cherry-picks for 2.12.6 (#61)
• 9f904de [FIXED] Incomplete route pool on premature pong
• b510192 [FIXED] Avoid stalling read loop on leafnode ErrMinimumVersionRequired
• 53941c2 Report the account and user name in USER.INFO request
• 1ab002a [IMPROVED] Support HTTP proxy connection from leaf nodes also for TCP
• 8b64082 Release v2.12.6-RC.3
• e6ab7e9 Cherry-picks for 2.12.6-RC.3 (#59)
• 9f4d960 Make the deduplication window actually work for deduplication for sourcing
• 304e184 Remove FIXME about auth callout nonce
• Additional commits viewable in compare view

Sourced from github.com/go-acme/lego/v4's releases.

v4.34.0

lego is an independent, free, and open-source project, if you value it, consider supporting it! ❤️

Everybody thinks that the others will donate, but in the end, nobody does.

So if you think that lego is worth it, please consider donating.

For key updates, see the changelog.

Changelog

• b682f8494cca7fd9859adc8814b253e6855b7faa Add DNS provider for 1cloud.ru (#2921)
• 79b83fe1e38e6b93443077014fb51d3ba3bfed7b Add DNS provider for Netnod (#2919)
• ca178943d0a6394ae44d94ed37306d66b14ee2c2 Add DNS provider for UCloud (#2972)
• 61bd6bf0b9bc49c740528316dc8054871127d706 Add DNS provider for online.net (#2964)
• 4f6a481bc4298383b1d2514f3dab0dbd0120b544 bluecatv2: fix documentation
• aa6fcebccb73828e933c33363dccc0a93a101988 fix: check base64url token
• 1274ec8741d7ac0b4232775e358bc95db44d961c oraclecloud: support profile session token (#2965)
• cff2cd750413febbec64cb5fb3eedfc5a2e31a49 rfc2136: add RFC3645 (TSIG-GSS) support (#2946)
• 33754b3b216169b18d580bddf1837e713bff7c30 rfc2136: add dnsupdate as alias (#2957)
• 79796e155e4460967458c0df8fe58ea390cfe08f yandex360: update API docs links (#2922)

v4.33.0

lego is an independent, free, and open-source project, if you value it, consider supporting it! ❤️

Everybody thinks that the others will donate, but in the end, nobody does.

So if you think that lego is worth it, please consider donating.

For key updates, see the changelog.

Changelog

• a56697ed1cd7eddeedfb459f9200b936afeeb34a Add DNS provider for EuroDNS (#2898)
• 9be8cd43ae5de725b39643598e00da367969cab6 Add DNS provider for Excedo (#2910)
• 847c763504888c511d7fcec82d65004caf25853e feat: Add DNS provider for Czechia (#2885)
• 491dcaad1d4b77f3ec703a581e9a8d900869953d feat: allow to Unwrap obtainError (#2874)
• 87b172f103b26c8ea40c5e811576ad454f7b6891 gigahostno: remove unused Zone fields (#2913)
• 7d459b59c5882aac5cd8545cbda77e18852f5cd3 liara: add support for team ID (#2867)
• 7b1aa50081643440c853a682ad8a9c2bf706929b safedns: rename UKFast SafeDNS to ANS SafeDNS (#2877)

v4.32.0

lego is an independent, free, and open-source project, if you value it, consider supporting it! ❤️

Everybody thinks that the others will donate, but in the end, nobody does.

So if you think that lego is worth it, please consider donating.

For key updates, see the changelog.

Changelog

• 078a1889c87c750f6051a3dd9dc1e5e24e690ec8 Add DNS provider for ArtFiles (#2859)

... (truncated)

Sourced from github.com/go-acme/lego/v4's changelog.

v4.34.0

• Release date: 2026-04-15
• Tag: v4.34.0

Added

• [dnsprovider] Add DNS provider for UCloud
• [dnsprovider] Add DNS provider for online.net
• [dnsprovider] Add DNS provider for 1cloud.ru
• [dnsprovider] Add DNS provider for Netnod
• [dnsprovider] oraclecloud: support profile session token
• [dnsprovider] rfc2136: add RFC3645 (TSIG-GSS) support

Changed

• [dnsprovider] rfc2136: add dnsupdate as alias

Fixed

• [httpprovider] Check base64url token

v4.33.0

• Release date: 2026-03-19
• Tag: v4.33.0

Added

• [dnsprovider] Add DNS provider for Excedo
• [dnsprovider] Add DNS provider for EuroDNS
• [dnsprovider] Add DNS provider for Czechia

Changed

• [lib] feat: allow to Unwrap obtainError

Fixed

• [dnsprovider] liara: add support for team ID
• [dnsprovider] gigahostno: remove unused Zone fields

v4.32.0

• Release date: 2026-02-19
• Tag: v4.32.0

Added

• [dnsprovider] Add DNS provider for ArtFiles

... (truncated)

• f3c686a Prepare release v4.34.0
• aa6fceb fix: check base64url token
• 2c87024 chore: update dependencies (#2978)
• 152e454 chore: update github.com/modern-go/reflect2 (#2977)
• 29fd2d9 chore: improve issue templates
• ca17894 Add DNS provider for UCloud (#2972)
• c4ab057 chore: improve issue templates
• 61bd6bf Add DNS provider for online.net (#2964)
• 1274ec8 oraclecloud: support profile session token (#2965)
• 4f6a481 bluecatv2: fix documentation
• Additional commits viewable in compare view

Sourced from github.com/go-jose/go-jose/v4's releases.

v4.1.4

What's Changed

Fixes Panic in JWE decryption. See GHSA-78h2-9frx-2jm8

Full Changelog: go-jose/go-jose@v4.1.3...v4.1.4

• 0e59876 Merge commit from fork
• ddffdbc Bump actions/checkout from 5 to 6 (#213)
• See full diff in compare view

Sourced from go.opentelemetry.io/otel's changelog.

[1.43.0/0.65.0/0.19.0] 2026-04-02

Added

• Add IsRandom and WithRandom on TraceFlags, and IsRandom on SpanContext in go.opentelemetry.io/otel/trace for W3C Trace Context Level 2 Random Trace ID Flag support. (#8012)
• Add service detection with WithService in go.opentelemetry.io/otel/sdk/resource. (#7642)
• Add DefaultWithContext and EnvironmentWithContext in go.opentelemetry.io/otel/sdk/resource to support plumbing context.Context through default and environment detectors. (#8051)
• Support attributes with empty value (attribute.EMPTY) in go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc. (#8038)
• Support attributes with empty value (attribute.EMPTY) in go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc. (#8038)
• Support attributes with empty value (attribute.EMPTY) in go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc. (#8038)
• Support attributes with empty value (attribute.EMPTY) in go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp. (#8038)
• Support attributes with empty value (attribute.EMPTY) in go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp. (#8038)
• Support attributes with empty value (attribute.EMPTY) in go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp. (#8038)
• Support attributes with empty value (attribute.EMPTY) in go.opentelemetry.io/otel/sdk/metric/metricdata/metricdatatest. (#8038)
• Add support for per-series start time tracking for cumulative metrics in go.opentelemetry.io/otel/sdk/metric. Set OTEL_GO_X_PER_SERIES_START_TIMESTAMPS=true to enable. (#8060)
• Add WithCardinalityLimitSelector for metric reader for configuring cardinality limits specific to the instrument kind. (#7855)

Changed

• Introduce the EMPTY Type in go.opentelemetry.io/otel/attribute to reflect that an empty value is now a valid value, with INVALID remaining as a deprecated alias of EMPTY. (#8038)
• Improve slice handling in go.opentelemetry.io/otel/attribute to optimize short slice values with fixed-size fast paths. (#8039)
• Improve performance of span metric recording in go.opentelemetry.io/otel/sdk/trace by returning early if self-observability is not enabled. (#8067)
• Improve formatting of metric data diffs in go.opentelemetry.io/otel/sdk/metric/metricdata/metricdatatest. (#8073)

Deprecated

• Deprecate INVALID in go.opentelemetry.io/otel/attribute. Use EMPTY instead. (#8038)

Fixed

• Return spec-compliant TraceIdRatioBased description. This is a breaking behavioral change, but it is necessary to make the implementation spec-compliant. (#8027)
• Fix a race condition ...

  Description has been truncated