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chore(deps): bump undici from 6.23.0 to 6.27.0#4838

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chore(deps): bump undici from 6.23.0 to 6.27.0#4838
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Bumps undici from 6.23.0 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 6.23.0 to 6.27.0.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v6.23.0...v6.27.0)

---
updated-dependencies:
- dependency-name: undici
  dependency-version: 6.27.0
  dependency-type: direct:production
...

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 22, 2026
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⚠️ No Changeset found

Latest commit: f01b5ce

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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commit: f01b5ce

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💡 Codex Review

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Reviewed commit: f01b5ce3f4

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Comment thread pnpm-lock.yaml
'@rsbuild/core':
specifier: 2.0.0-beta.2
version: 2.0.0-beta.2(@module-federation/runtime-tools@2.2.2(node-fetch@2.7.0(encoding@0.1.13)))(core-js@3.49.0)
version: 2.0.0-beta.2(@module-federation/runtime-tools@0.21.6)(core-js@3.49.0)

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P2 Badge Keep Rspack's runtime-tools peer in range

This lockfile churn is outside the undici update and changes packages/storybook-addon's @rsbuild/core virtual package to use @module-federation/runtime-tools@0.21.6. The same lockfile declares @rspack/core@2.0.0-beta.0's peer requirement as >=0.22.0, so installing/building the Storybook Rsbuild addon from this lockfile gives Rspack an unsupported runtime-tools peer instead of the previous 2.2.2 resolution; please regenerate the lockfile so that peer stays in range.

Useful? React with 👍 / 👎.

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Bundle Size Report

10 package(s) changed, 31 unchanged.

Package dist + ESM entry

Package Total dist (raw) Delta ESM gzip Delta
@module-federation/cli 26.3 kB no change 786 B no change
@module-federation/core 39.1 kB no change 173 B no change
@module-federation/devtools 664.0 kB no change 4.0 kB no change
@module-federation/enhanced 809.2 kB no change 672 B no change
@module-federation/managers 69.8 kB no change 334 B no change
@module-federation/manifest 136.1 kB no change 182 B no change
@module-federation/metro-plugin-rnc-cli 0 B no change 314 B no change
@module-federation/node 193.4 kB no change 217 B no change
@module-federation/storybook-addon 79.1 kB no change 100 B no change
@module-federation/utilities 110.6 kB no change 328 B no change

Bundle targets

Package Web bundle (gzip) Delta Node bundle (gzip) Delta
@module-federation/cli 2.3 kB -30 B (-1.3%) 2.3 kB -30 B (-1.3%)
@module-federation/core 1.1 kB -30 B (-2.7%) 1.0 kB -29 B (-2.7%)
@module-federation/devtools 30.2 kB -25 B (-0.1%) 30.2 kB -25 B (-0.1%)
@module-federation/enhanced 2.6 kB -43 B (-1.6%) 2.6 kB -43 B (-1.6%)
@module-federation/managers 2.4 kB -26 B (-1.0%) 2.4 kB -26 B (-1.0%)
@module-federation/manifest 6.1 kB -39 B (-0.6%) 6.1 kB -39 B (-0.6%)
@module-federation/metro-plugin-rnc-cli 411 B -25 B (-5.7%) 411 B -25 B (-5.7%)
@module-federation/node 9.2 kB -27 B (-0.3%) 9.2 kB -27 B (-0.3%)
@module-federation/storybook-addon 1.9 kB -22 B (-1.1%) 1.7 kB -23 B (-1.3%)
@module-federation/utilities 2.6 kB -31 B (-1.2%) 2.6 kB -31 B (-1.2%)

Consumer scenarios

Scenario Web output (gzip) Delta Node output (gzip) Delta Gap (node-web) Delta
Enhanced remoteEntry 21.4 kB -11 B (-0.1%) 22.5 kB -12 B (-0.1%) +1.1 kB -1 B

Total dist (raw): 6.81 MB (no change)
Total ESM gzip: 78.5 kB (no change)
Total web bundle (gzip): 207.1 kB (-298 B (-0.1%))
Total node bundle (gzip): 207.6 kB (-298 B (-0.1%))
Tracked ./bundler entry gzip: 556 B (no change)
Tracked ./bundler web bundle (gzip): 4.8 kB (no change)
Tracked ./bundler node bundle (gzip): 4.8 kB (no change)

Bundle sizes are generated with rslib (Rspack). Package-root metrics preserve the historical report. Tracked subpath exports such as ./bundler are measured separately so ENV_TARGET-driven tree-shaking is visible. Bare imports are externalized to keep package-level sizes consistent, and assets are emitted as resources.

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