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chore(deps): update dependency uuid to v11.1.1 [security] - #2478

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renovate/npm-uuid-vulnerability
May 25, 2026
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chore(deps): update dependency uuid to v11.1.1 [security]#2478
Onibenjo merged 1 commit into
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renovate/npm-uuid-vulnerability

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@renovate renovate Bot commented Apr 23, 2026

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This PR contains the following updates:

Package Change Age Adoption Passing Confidence
uuid 11.1.011.1.1 age adoption passing 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

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codecov Bot commented Apr 23, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.65%. Comparing base (8229719) to head (f07f07d).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files
@@           Coverage Diff           @@
##             main    #2478   +/-   ##
=======================================
  Coverage   78.65%   78.65%           
=======================================
  Files          16       16           
  Lines        1940     1940           
=======================================
  Hits         1526     1526           
  Misses        414      414           
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@renovate
renovate Bot force-pushed the renovate/npm-uuid-vulnerability branch 6 times, most recently from 8afb6df to a1b90fc Compare April 27, 2026 08:30
@renovate renovate Bot changed the title chore(deps): update dependency uuid to v14 [security] chore(deps): update dependency uuid to v14 [security] - autoclosed Apr 27, 2026
@renovate renovate Bot closed this Apr 27, 2026
@renovate
renovate Bot deleted the renovate/npm-uuid-vulnerability branch April 27, 2026 17:58
@renovate renovate Bot changed the title chore(deps): update dependency uuid to v14 [security] - autoclosed chore(deps): update dependency uuid to v14 [security] Apr 28, 2026
@renovate renovate Bot reopened this Apr 28, 2026
@renovate
renovate Bot force-pushed the renovate/npm-uuid-vulnerability branch 3 times, most recently from 66e434c to 2ae4078 Compare April 28, 2026 12:18
@renovate renovate Bot changed the title chore(deps): update dependency uuid to v14 [security] Update dependency uuid to v14 [SECURITY] Apr 29, 2026
@renovate
renovate Bot force-pushed the renovate/npm-uuid-vulnerability branch from 2ae4078 to 33b6183 Compare April 29, 2026 07:38
@renovate renovate Bot changed the title Update dependency uuid to v14 [SECURITY] chore(deps): update dependency uuid to v14 [security] Apr 29, 2026
@renovate
renovate Bot force-pushed the renovate/npm-uuid-vulnerability branch 2 times, most recently from 51ce5dd to 05edb6c Compare April 30, 2026 06:11
@renovate renovate Bot changed the title chore(deps): update dependency uuid to v14 [security] Update dependency uuid to v14 [SECURITY] Apr 30, 2026
@renovate
renovate Bot force-pushed the renovate/npm-uuid-vulnerability branch 8 times, most recently from b2c8139 to 34d5013 Compare May 4, 2026 13:46
@renovate
renovate Bot force-pushed the renovate/npm-uuid-vulnerability branch 2 times, most recently from 8f18846 to feeed89 Compare May 6, 2026 10:47
@renovate renovate Bot changed the title Update dependency uuid to v11.1.1 [SECURITY] chore(deps): update dependency uuid to v11.1.1 [security] May 6, 2026
@renovate
renovate Bot force-pushed the renovate/npm-uuid-vulnerability branch 6 times, most recently from beb8ff4 to b323200 Compare May 11, 2026 11:19
@renovate
renovate Bot force-pushed the renovate/npm-uuid-vulnerability branch 8 times, most recently from 42705b1 to f1c9508 Compare May 21, 2026 08:36
@renovate renovate Bot changed the title chore(deps): update dependency uuid to v11.1.1 [security] chore(deps): update dependency uuid to v11.1.1 [security] - autoclosed May 21, 2026
@renovate renovate Bot closed this May 21, 2026
@renovate renovate Bot changed the title chore(deps): update dependency uuid to v11.1.1 [security] - autoclosed Update dependency uuid to v11.1.1 [SECURITY] May 25, 2026
@renovate renovate Bot reopened this May 25, 2026
@renovate
renovate Bot force-pushed the renovate/npm-uuid-vulnerability branch 2 times, most recently from f1c9508 to 23f1f22 Compare May 25, 2026 09:14
@renovate renovate Bot changed the title Update dependency uuid to v11.1.1 [SECURITY] chore(deps): update dependency uuid to v11.1.1 [security] May 25, 2026
@renovate
renovate Bot force-pushed the renovate/npm-uuid-vulnerability branch from 23f1f22 to f07f07d Compare May 25, 2026 13:28

@Onibenjo Onibenjo left a comment

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LGTM.

@Onibenjo
Onibenjo merged commit a920b32 into main May 25, 2026
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