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@renovate renovate bot commented Nov 14, 2025

This PR contains the following updates:

Package Change Age Confidence
js-yaml 4.1.0 -> 4.1.1 age confidence

GitHub Vulnerability Alerts

CVE-2025-64718

Impact

In js-yaml 4.1.0, 4.0.0, and 3.14.1 and below, it's possible for an attacker to modify the prototype of the result of a parsed yaml document via prototype pollution (__proto__). All users who parse untrusted yaml documents may be impacted.

Patches

Problem is patched in js-yaml 4.1.1 and 3.14.2.

Workarounds

You can protect against this kind of attack on the server by using node --disable-proto=delete or deno (in Deno, pollution protection is on by default).

References

https://cheatsheetseries.owasp.org/cheatsheets/Prototype_Pollution_Prevention_Cheat_Sheet.html


Release Notes

nodeca/js-yaml (js-yaml)

v4.1.1

Compare Source

Security
  • Fix prototype pollution issue in yaml merge (<<) operator.

Configuration

📅 Schedule: Branch creation - "" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

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

@renovate renovate bot force-pushed the renovate/npm-js-yaml-vulnerability branch from 9c328b5 to ba1ed41 Compare November 21, 2025 10:40
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codecov bot commented Nov 21, 2025

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.60%. Comparing base (0edc5dc) to head (ba1ed41).
⚠️ Report is 26 commits behind head on master.

Additional details and impacted files
@@            Coverage Diff             @@
##           master     #256      +/-   ##
==========================================
- Coverage   98.65%   96.60%   -2.06%     
==========================================
  Files          51       48       -3     
  Lines        1933     1943      +10     
  Branches      513      489      -24     
==========================================
- Hits         1907     1877      -30     
- Misses         23       59      +36     
- Partials        3        7       +4     

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