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chore(deps-dev): bump undici from 6.24.0 to 6.27.0#157

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Jun 20, 2026
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chore(deps-dev): bump undici from 6.24.0 to 6.27.0#157
mergify[bot] merged 1 commit into
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dependabot/npm_and_yarn/undici-6.27.0

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Bumps undici from 6.24.0 to 6.27.0.

Release notes

Sourced from undici's releases.

v6.27.0

⚠️ Security Release

This release line addresses 4 security advisories.

Action required: Upgrade to undici 6.27.0 or later.

npm install undici@^6.27.0

Note on patched version: the v6 fixes shipped in v6.27.0, not 6.26.0v6.26.0 contains only the chunked-EOF fix (#5308) and the version bump, none of the security fixes below.

The v6 line is not affected by the SOCKS5 advisories (GHSA-vmh5-mc38-953g, GHSA-hm92-r4w5-c3mj), the shared-cache disclosure (GHSA-pr7r-676h-xcf6), or the 8.x-only WebSocket regression (GHSA-38rv-x7px-6hhq).

Summary

Advisory CVE Severity (CVSS) Fixed in Fix commit
GHSA-vxpw-j846-p89q CVE-2026-12151 High (7.5) 6.27.0 b7f252e7
GHSA-p88m-4jfj-68fv CVE-2026-9679 Moderate (5.9) 6.27.0 25efa447
GHSA-g8m3-5g58-fq7m CVE-2026-11525 Low (3.7) 6.27.0 25efa447
GHSA-35p6-xmwp-9g52 CVE-2026-6733 Low (3.7) 6.27.0 f4c31d60

High severity

WebSocket DoS via fragment count bypass — CVE-2026-12151

GHSA-vxpw-j846-p89q · CWE-400, CWE-770 Fix: b7f252e7 Backport WebSocket maxPayloadSize fixes (#5423, backported to v6 in #5428)

A malicious WebSocket server can stream a large number of small or empty continuation frames. Undici enforced a limit on cumulative payload size but did not limit the number of fragments per message, leading to unbounded memory growth and denial of service. All releases from 6.17.0 onward are affected.

  • Affected: applications using new WebSocket(...) or WebSocketStream against untrusted endpoints.
  • Workaround: none — upgrade is required.

Moderate severity

HTTP header injection via Set-Cookie percent-decoding — CVE-2026-9679

... (truncated)

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Bumps [undici](https://github.com/nodejs/undici) from 6.24.0 to 6.27.0.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v6.24.0...v6.27.0)

---
updated-dependencies:
- dependency-name: undici
  dependency-version: 6.27.0
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot added dependencies Pull requests that update a dependency file javascript Pull requests that update javascript code labels Jun 20, 2026

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Automatically approving dependabot

@mergify mergify Bot requested a review from a team June 20, 2026 09:27
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🦙 MegaLinter status: ✅ SUCCESS

Descriptor Linter Files Fixed Errors Elapsed time
✅ EDITORCONFIG editorconfig-checker 1 0 0.01s
✅ JSON jsonlint 1 0 0.24s
✅ JSON npm-package-json-lint yes no 0.54s
✅ JSON prettier 1 0 1.17s
✅ JSON v8r 1 0 1.7s
✅ REPOSITORY checkov yes no 18.22s
✅ REPOSITORY gitleaks yes no 13.19s
✅ REPOSITORY git_diff yes no 0.03s
✅ REPOSITORY secretlint yes no 2.64s
✅ REPOSITORY trivy-sbom yes no 2.67s
✅ REPOSITORY trufflehog yes no 5.19s

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@mergify mergify Bot merged commit 4b27f07 into main Jun 20, 2026
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@mergify mergify Bot deleted the dependabot/npm_and_yarn/undici-6.27.0 branch June 20, 2026 09:29
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