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@mend-on-mend mend-on-mend bot commented Dec 8, 2025

This PR contains the following updates:

Package Change Age Confidence
js-yaml 4.1.0 -> 4.1.1 age confidence
js-yaml 3.14.1 -> 3.14.2 age confidence

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 OSV and the GitHub Advisory Database (CC-BY 4.0).


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).

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Note

Updates js-yaml to 4.1.1 (from 4.1.0) and 3.14.2 (from 3.14.1) in root and workspace yarn.lock files.

  • Dependencies:
    • Bump js-yaml:
      • ^4.x: 4.1.0 -> 4.1.1.
      • ^3.x: 3.14.1 -> 3.14.2.
    • Applied in lockfiles: yarn.lock, workspaces/kiali/yarn.lock, workspaces/rbac/yarn.lock, workspaces/topology/yarn.lock, workspaces/linguist/yarn.lock.
    • Consolidates lockfile entries (separates =4.1.0 pin and updates ^4.x range to 4.1.1).

Written by Cursor Bugbot for commit 8acc8e6. This will update automatically on new commits. Configure here.

Signed-off-by: mend-on-mend[bot] <mend-on-mend[bot]@users.noreply.github.com>
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mend-on-mend bot commented Dec 8, 2025

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Renovate will not automatically rebase this PR, because it does not recognize the last commit author and assumes somebody else may have edited the PR.

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