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Update dependency uuid to v11 [SECURITY]#822

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renovate/npm-uuid-vulnerability
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Update dependency uuid to v11 [SECURITY]#822
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renovate/npm-uuid-vulnerability

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@renovate renovate Bot commented May 21, 2026

This PR contains the following updates:

Package Change Age Confidence
uuid 9.0.111.1.1 age confidence

uuid: Missing buffer bounds check in v3/v5/v6 when buf is provided

CVE-2026-41907 / GHSA-w5hq-g745-h8pq

More information

Details

Summary

The v3(), v5(), and v6() API methods (not uuid release versions) accept external output buffers but do not reject out-of-range writes (small buf or large offset).
By contrast, v4(), v1(), and v7() API methods explicitly throw RangeError on invalid bounds.

This inconsistency allows silent partial writes into caller-provided buffers.

Affected code
  • src/v35.ts (v3()/v5() path) writes buf[offset + i] without bounds validation.
  • src/v6.ts writes buf[offset + i] without bounds validation.
Reproducible PoC
cd /home/StrawHat/uuid
npm ci
npm run build

node --input-type=module -e "
import {v4,v5,v6} from './dist-node/index.js';
const ns='6ba7b810-9dad-11d1-80b4-00c04fd430c8';
for (const [name,fn] of [
  ['v4()',()=>v4({},new Uint8Array(8),4)],
  ['v5()',()=>v5('x',ns,new Uint8Array(8),4)],
  ['v6()',()=>v6({},new Uint8Array(8),4)],
]) {
  try { fn(); console.log(name,'NO_THROW'); }
  catch(e){ console.log(name,'THREW',e.name); }
}"

Observed:

  • v4() THREW RangeError
  • v5() NO_THROW
  • v6() NO_THROW

Example partial overwrite evidence captured during audit:

same true buf [
  170, 170, 170, 170,
   75, 224, 100,  63
]
v6 [
  187, 187, 187, 187,
   31,  19, 185,  64
]
Security impact
  • Primary: integrity/robustness issue (silent partial output).
  • If an application assumes full UUID writes into preallocated buffers, this can produce malformed/truncated/partially stale identifiers without error.
  • In systems where caller-controlled offsets/buffer sizes are exposed indirectly, this may become a security-relevant logic flaw.
Suggested fix

Add the same guard used by v4()/v1()/v7():

if (offset < 0 || offset + 16 > buf.length) {
  throw new RangeError(`UUID byte range ${offset}:${offset + 15} is out of buffer bounds`);
}

Apply to:

  • src/v35.ts (covers v3() and v5())
  • src/v6.ts

Severity

  • CVSS Score: 6.3 / 10 (Medium)
  • Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

References

This data is provided by the GitHub Advisory Database (CC-BY 4.0).


Release Notes

uuidjs/uuid (uuid)

v11.1.1

Compare Source

v11.1.0

Compare Source

Features
  • update TS types to allowUint8Array subtypes for buffer option (#​865) (a5231e7)

v11.0.5

Compare Source

Bug Fixes

v11.0.4

Compare Source

Bug Fixes

v11.0.3

Compare Source

Bug Fixes

v11.0.2

Compare Source

Bug Fixes

v11.0.1

Compare Source

Bug Fixes

v11.0.0

Compare Source

⚠ BREAKING CHANGES
  • refactor v1 internal state and options logic (#​780)
  • refactor v7 internal state and options logic, fixes #​764 (#​779)
  • Port to TypeScript, closes #​762 (#​763)
  • update node support matrix (only support node 16-20) (#​750)
Features
Bug Fixes

v10.0.0

Compare Source

⚠ BREAKING CHANGES
  • update node support (drop node@​12, node@​14, add node@​20) (#​750)
Features
Bug Fixes

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This PR was generated by Mend Renovate. View the repository job log.

@renovate renovate Bot requested a review from a team as a code owner May 21, 2026 18:53
@renovate renovate Bot added minor Release with a minor level update renovate-deps labels May 21, 2026
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