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meta: bump undici from 6.25.0 to 6.27.0#846

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meta: bump undici from 6.25.0 to 6.27.0#846
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dependabot/npm_and_yarn/undici-6.27.0

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@dependabot dependabot Bot commented on behalf of github Jun 19, 2026

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Bumps undici from 6.25.0 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 6.25.0 to 6.27.0.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v6.25.0...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 auto-merge Ready to automatically merge after being open for 48 hours dependencies [Dependabot Only] Pull requests that update a dependency file javascript [Dependabot Only] Pull requests that update Javascript code labels Jun 19, 2026
@dependabot dependabot Bot requested a review from a team as a code owner June 19, 2026 19:04
@vercel

vercel Bot commented Jun 19, 2026

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The latest updates on your projects. Learn more about Vercel for GitHub.

Project Deployment Actions Updated (UTC)
api-docs-tooling Ready Ready Preview Jun 19, 2026 7:06pm

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@codecov

codecov Bot commented Jun 19, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.56%. Comparing base (c487cef) to head (4635f7d).

Additional details and impacted files
@@           Coverage Diff           @@
##             main     #846   +/-   ##
=======================================
  Coverage   84.56%   84.56%           
=======================================
  Files         176      176           
  Lines       15811    15811           
  Branches     1411     1411           
=======================================
  Hits        13371    13371           
  Misses       2430     2430           
  Partials       10       10           

☔ View full report in Codecov by Harness.
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web Generator

File Base Head Diff
all.html 19.85 MB 19.85 MB -6.00 B (-0.00%)

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