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Update dependency js-yaml to v4.1.1 [SECURITY]#8926

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Update dependency js-yaml to v4.1.1 [SECURITY]#8926
renovate[bot] wants to merge 1 commit into
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renovate/npm-js-yaml-vulnerability

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@renovate renovate Bot commented May 8, 2026

This PR contains the following updates:

Package Change Age Confidence
js-yaml 4.1.04.1.1 age confidence

Warning

Some dependencies could not be looked up. Check the Dependency Dashboard for more information.


js-yaml has prototype pollution in merge (<<)

CVE-2025-64718 / GHSA-mh29-5h37-fv8m

More information

Details

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

Severity

  • CVSS Score: 5.3 / 10 (Medium)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

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


Release Notes

nodeca/js-yaml (js-yaml)

v4.1.1

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@renovate renovate Bot added the review:tech Request for technical review on the docs platform or processes. label May 8, 2026
@renovate renovate Bot requested a review from a team as a code owner May 8, 2026 07:32
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