Bump undici from 6.27.0 to 8.5.0

[dependabot]

Bumps undici from 6.27.0 to 8.5.0.

Release notes

Sourced from undici's releases.

v8.5.0

⚠️ Security Release

This release line addresses 8 security advisories. Most are fixed in v8.5.0; the SOCKS5 pool-reuse issue was fixed earlier in v8.2.0.

Action required: Upgrade to undici 8.5.0 or later.

npm install undici@^8.5.0

Summary

Advisory	CVE	Severity (CVSS)	Fixed in	Fix commit
GHSA-vxpw-j846-p89q	CVE-2026-12151	High (7.5)	8.5.0	32dbf0b3
GHSA-38rv-x7px-6hhq	CVE-2026-9675	High (7.5)	8.5.0	b4c287b3
GHSA-vmh5-mc38-953g	CVE-2026-9697	High (7.4)	8.5.0	42d49559
GHSA-hm92-r4w5-c3mj	CVE-2026-6734	High (7.5)	8.2.0	a516f870
GHSA-pr7r-676h-xcf6	CVE-2026-9678	Moderate (5.9)	8.5.0	cb105d7c
GHSA-p88m-4jfj-68fv	CVE-2026-9679	Moderate (5.9)	8.5.0	5655ea43
GHSA-g8m3-5g58-fq7m	CVE-2026-11525	Low (3.7)	8.5.0	5655ea43
GHSA-35p6-xmwp-9g52	CVE-2026-6733	Low (3.7)	8.5.0	6ea54ef8

---

High severity

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

GHSA-vxpw-j846-p89q · CWE-400, CWE-770 Fix: 32dbf0b3 websocket: limit the number of fragments in a message (also c5ed7875 handle empty fragments and stream limits)

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.

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

WebSocket DoS via cumulative fragment bypass — CVE-2026-9675

GHSA-38rv-x7px-6hhq · CWE-400, CWE-770 Fix: b4c287b3 fix(websocket): enforce max payload size across fragments

Undici validated the size of individual frames but did not track cumulative size across a fragmented message. An attacker could send many small fragments that each pass per-frame validation but collectively exceed the configured limit, causing memory exhaustion. This is a regression introduced in 8.1.0 (the

... (truncated)

Commits

• a0806e1 Bumped v8.5.0 (#5429)
• 8a0392c test: detect available python command in wpt runner (#5427)
• f4045b9 ci: increase Node.js workflow timeout (#5426)
• 363e44f chore: removed repro-h2-pipelining-default.mjs and lint (#5420)
• c5ed787 websocket: handle empty fragments and stream limits
• e114e77 align EventSource with spec (#5418)
• 6df53c5 fix: preserve h2 queue on out-of-order completion (#5410)
• 32dbf0b websocket: limit the number of fragments in a message
• 0d6ecc5 add bodymixin.textStream() (#5416)
• 42d4955 fix: honor requestTls when proxy is SOCKS5
• Additional commits viewable in compare view

[github-actions]

⚠️ Deprecation Warning: The deny-licenses option is deprecated for possible removal in the next major release. For more information, see issue 997.

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Package	Version	Score	Details
npm/nodemailer	9.0.1	🟢 6	Details Check Score Reason Code-Review ⚠️ 0 Found 0/24 approved changesets -- score normalized to 0 Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Maintained 🟢 10 30 commit(s) and 2 issue activity found in the last 90 days -- score normalized to 10 CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Security-Policy 🟢 10 security policy file detected Binary-Artifacts 🟢 10 no binaries found in the repo Pinned-Dependencies ⚠️ 2 dependency not pinned by hash detected -- score normalized to 2 License 🟢 9 license file detected Fuzzing ⚠️ 0 project is not fuzzed Signed-Releases ⚠️ -1 no releases found Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md SAST 🟢 7 SAST tool detected but not run on all commits Packaging 🟢 10 packaging workflow detected
npm/undici	8.5.0	🟢 7.5	Details Check Score Reason Code-Review 🟢 6 Found 18/27 approved changesets -- score normalized to 6 Dependency-Update-Tool 🟢 10 update tool detected Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Security-Policy 🟢 10 security policy file detected Maintained 🟢 10 30 commit(s) and 13 issue activity found in the last 90 days -- score normalized to 10 Binary-Artifacts 🟢 8 binaries present in source code Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Pinned-Dependencies 🟢 6 dependency not pinned by hash detected -- score normalized to 6 Signed-Releases ⚠️ -1 no releases found CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Packaging 🟢 10 packaging workflow detected Branch-Protection ⚠️ -1 internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md Vulnerabilities 🟢 3 7 existing vulnerabilities detected License 🟢 10 license file detected Fuzzing 🟢 10 project is fuzzed SAST 🟢 9 SAST tool detected but not run on all commits CI-Tests 🟢 10 23 out of 23 merged PRs checked by a CI test -- score normalized to 10 Contributors 🟢 10 project has 75 contributing companies or organizations

Scanned Files

• package-lock.json