[release-4.18] OCPBUGS-80278: fix CVE-2026-33186 by replacing grpc-go

[jparrill]

Summary

• Fix CVE-2026-33186 by replacing google.golang.org/grpc with the patched fork github.com/openshift-sustaining/grpc-go v1.71.3-sec.1

CVE Details

CVE-2026-33186 — Authorization bypass in gRPC-Go server via malformed :path headers.

Malformed :path headers (missing the leading slash) could bypass path-based "deny" rules in interceptors like grpc/authz. The patch enforces strict path checking for incoming requests on the server, rejecting any request with a non-canonical path with an Unimplemented error.

Links

• Jira: OCPBUGS-85624
• GitHub Advisory: GHSA-p77j-4mvh-x3m3
• Patched fork release: v1.71.3-sec.1
• Upstream fix: grpc/grpc-go@72186f1

Test plan

• make update passes
• CI passes

🤖 Generated with Claude Code

[openshift-ci-robot]

@jparrill: This pull request references Jira Issue OCPBUGS-85624, which is invalid:

• release note text must be set and not match the template OR release note type must be set to "Release Note Not Required". For more information you can reference the OpenShift Bug Process.
• expected Jira Issue OCPBUGS-85624 to depend on a bug targeting a version in 4.19.0, 4.19.z and in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but no dependents were found

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

The bug has been updated to refer to the pull request using the external bug tracker.

Details

In response to this:

Summary

• Fix CVE-2026-33186 by replacing google.golang.org/grpc with the patched fork github.com/openshift-sustaining/grpc-go v1.71.3-sec.1

CVE Details

CVE-2026-33186 — Authorization bypass in gRPC-Go server via malformed :path headers.

Malformed :path headers (missing the leading slash) could bypass path-based "deny" rules in interceptors like grpc/authz. The patch enforces strict path checking for incoming requests on the server, rejecting any request with a non-canonical path with an Unimplemented error.

Links

• Jira: OCPBUGS-85624
• GitHub Advisory: GHSA-p77j-4mvh-x3m3
• Patched fork release: v1.71.3-sec.1
• Upstream fix: grpc/grpc-go@72186f1

Test plan

• make update passes
• CI passes

🤖 Generated with Claude Code

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jparrill

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[jparrill]

/jira refresh

[openshift-ci-robot]

@jparrill: This pull request references Jira Issue OCPBUGS-85624, which is invalid:

• release note text must be set and not match the template OR release note type must be set to "Release Note Not Required". For more information you can reference the OpenShift Bug Process.
• expected dependent Jira Issue OCPBUGS-85623 to be in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but it is ASSIGNED instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

Details

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/jira refresh

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[bryan-cox]

/lgtm

[jparrill]

/jira refresh

[openshift-ci-robot]

@jparrill: This pull request references Jira Issue OCPBUGS-85624, which is invalid:

• expected dependent Jira Issue OCPBUGS-85623 to be in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but it is ASSIGNED instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

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/jira refresh

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[openshift-ci]

@jparrill: all tests passed!

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[jparrill]

/verified by e2e

[openshift-ci-robot]

@jparrill: This PR has been marked as verified by e2e.

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/verified by e2e

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[jparrill]

/jira refresh

[openshift-ci-robot]

@jparrill: This pull request references Jira Issue OCPBUGS-85624, which is invalid:

• expected dependent Jira Issue OCPBUGS-85623 to be in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but it is ON_QA instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

Details

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/jira refresh

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[germanparente]

/retitle [release-4.18] OCPBUGS-80278: fix CVE-2026-33186 by replacing grpc-go

[openshift-ci-robot]

@jparrill: This pull request references Jira Issue OCPBUGS-80278, which is invalid:

• release note text must be set and not match the template OR release note type must be set to "Release Note Not Required". For more information you can reference the OpenShift Bug Process.
• expected dependent Jira Issue OCPBUGS-80459 to be in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but it is ASSIGNED instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

The bug has been updated to refer to the pull request using the external bug tracker.

Details

In response to this:

Summary

• Fix CVE-2026-33186 by replacing google.golang.org/grpc with the patched fork github.com/openshift-sustaining/grpc-go v1.71.3-sec.1

CVE Details

CVE-2026-33186 — Authorization bypass in gRPC-Go server via malformed :path headers.

Malformed :path headers (missing the leading slash) could bypass path-based "deny" rules in interceptors like grpc/authz. The patch enforces strict path checking for incoming requests on the server, rejecting any request with a non-canonical path with an Unimplemented error.

Links

• Jira: OCPBUGS-85624
• GitHub Advisory: GHSA-p77j-4mvh-x3m3
• Patched fork release: v1.71.3-sec.1
• Upstream fix: grpc/grpc-go@72186f1

Test plan

• make update passes
• CI passes

🤖 Generated with Claude Code

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[germanparente]

/jira refresh

[openshift-ci-robot]

@germanparente: This pull request references Jira Issue OCPBUGS-80278, which is invalid:

• release note text must be set and not match the template OR release note type must be set to "Release Note Not Required". For more information you can reference the OpenShift Bug Process.
• expected dependent Jira Issue OCPBUGS-80459 to be in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but it is ON_QA instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

Details

In response to this:

/jira refresh

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[jparrill]

/jira refresh

[openshift-ci-robot]

@jparrill: This pull request references Jira Issue OCPBUGS-80278, which is invalid:

• expected dependent Jira Issue OCPBUGS-80459 to be in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but it is ON_QA instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

Details

In response to this:

/jira refresh

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[jparrill]

/jira refresh

[openshift-ci-robot]

@jparrill: This pull request references Jira Issue OCPBUGS-80278, which is invalid:

• expected dependent Jira Issue OCPBUGS-80459 to be in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but it is ON_QA instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

Details

In response to this:

/jira refresh

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[jparrill]

/jira refresh

[openshift-ci-robot]

@jparrill: This pull request references Jira Issue OCPBUGS-80278, which is invalid:

• expected dependent Jira Issue OCPBUGS-80459 to be in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but it is ON_QA instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

Details

In response to this:

/jira refresh

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[germanparente]

/jira refresh

[openshift-ci-robot]

@germanparente: This pull request references Jira Issue OCPBUGS-80278, which is valid. The bug has been moved to the POST state.

7 validation(s) were run on this bug

• bug is open, matching expected state (open)
• bug target version (4.18.z) matches configured target version for branch (4.18.z)
• bug is in the state ASSIGNED, which is one of the valid states (NEW, ASSIGNED, POST)
• release note type set to "Release Note Not Required"
• dependent bug Jira Issue OCPBUGS-80459 is in the state Verified, which is one of the valid states (VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA))
• dependent Jira Issue OCPBUGS-80459 targets the "4.19.z" version, which is one of the valid target versions: 4.19.0, 4.19.z
• bug has dependents

No GitHub users were found matching the public email listed for the QA contact in Jira (ocp-sustaining-admins@redhat.com), skipping review request.

Details

In response to this:

/jira refresh

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[openshift-ci-robot]

@jparrill: Jira Issue Verification Checks: Jira Issue OCPBUGS-80278
✔️ This pull request was pre-merge verified.
✔️ All associated pull requests have merged.
✔️ All associated, merged pull requests were pre-merge verified.

Jira Issue OCPBUGS-80278 has been moved to the MODIFIED state and will move to the VERIFIED state when the change is available in an accepted nightly payload. 🕓

Details

In response to this:

Summary

• Fix CVE-2026-33186 by replacing google.golang.org/grpc with the patched fork github.com/openshift-sustaining/grpc-go v1.71.3-sec.1

CVE Details

CVE-2026-33186 — Authorization bypass in gRPC-Go server via malformed :path headers.

Malformed :path headers (missing the leading slash) could bypass path-based "deny" rules in interceptors like grpc/authz. The patch enforces strict path checking for incoming requests on the server, rejecting any request with a non-canonical path with an Unimplemented error.

Links

• Jira: OCPBUGS-85624
• GitHub Advisory: GHSA-p77j-4mvh-x3m3
• Patched fork release: v1.71.3-sec.1
• Upstream fix: grpc/grpc-go@72186f1

Test plan

• make update passes
• CI passes

🤖 Generated with Claude Code

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[openshift-merge-robot]

Fix included in release 4.18.0-0.nightly-2026-05-26-171704