refactor: Bump undici from 6.24.1 to 6.27.0

[dependabot]

Bumps undici from 6.24.1 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 6.26.0 — v6.26.0 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)

Commits

• 551138c Bumped v6.27.0 (#5431)
• b7f252e Backport WebSocket maxPayloadSize fixes to v7.x (#5423) (#5428)
• 25efa44 fix(cookies): preserve values and parse SameSite strictly
• f4c31d6 fix: guard idle socket validation to skip fresh sockets (#5400)
• 768beac Bumped v6.26.0 (#5323)
• 7917b25 fix: validate EOF for chunked h1 responses (#5308)
• 3420499 Bumped v6.25.0 (#5029)
• d7a1e55 feat: add configurable maxPayloadSize for WebSocket (#4955)
• a9d1848 Do not mark v6.x releases as latest
• 0126586 Ignore local agent configuration files
• See full diff in compare view

Summary by CodeRabbit

• Chores
  • Updated installed networking components to newer patch versions.
  • Refreshed package integrity and download metadata for improved dependency consistency.

[mtrezza]

@dependabot rebase

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 46.54%. Comparing base (ffc8beb) to head (9982697).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #425   +/-   ##
=======================================
  Coverage   46.54%   46.54%           
=======================================
  Files         106      106           
  Lines        6196     6196           
  Branches      950      950           
=======================================
  Hits         2884     2884           
  Misses       3004     3004           
  Partials      308      308           

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[mtrezza]

@coderabbitai full review

[mtrezza]

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 6ed5d1d5-7aa6-4bae-a0b3-d389a255ea2e

📥 Commits

Reviewing files that changed from the base of the PR and between ffc8beb and 9982697.

📒 Files selected for processing (1)

• package-lock.json

---

📝 Walkthrough

Walkthrough

The lockfile updates nested undici from 6.24.1 to 6.27.0 and top-level undici from 7.24.6 to 7.28.0, including resolved URLs and integrity hashes.

Changes

Undici lockfile refresh

Layer / File(s)	Summary
Update undici lock records package-lock.json	Updates the nested and top-level undici versions, resolved tarball URLs, and integrity hashes.

Estimated code review effort: 1 (Trivial) | ~2 minutes

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch dependabot/npm_and_yarn/undici-6.27.0

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