[GHSA-h67p-54hq-rp68] JS-YAML: Quadratic-complexity DoS in merge key handling via repeated aliases

[G-Rath]

Updates

• Affected products
• References

Comments
This was backported to v3:

• https://github.com/nodeca/js-yaml/blob/v3/CHANGELOG.md#3150---2026-06-27
• feat: add maxMergeSeqLength = 20 option in v3 nodeca/js-yaml#761 (comment)

[github]

Hi there @puzrin! A community member has suggested an improvement to your security advisory. If approved, this change will affect the global advisory listed at github.com/advisories. It will not affect the version listed in your project repository.

This change will be reviewed by our Security Curation Team. If you have thoughts or feedback, please share them in a comment here! If this PR has already been closed, you can start a new community contribution for this advisory

[Copilot]

Pull request overview

Updates the GHSA-h67p-54hq-rp68 advisory record to reflect corrected affected version ranges for js-yaml, including the v3 backport fix, and adds an additional supporting reference.

Changes:

• Refines the v4 affected range to start at 4.0.0 (fixed in 4.2.0).
• Adds a separate affected entry indicating v3 is fixed in 3.15.0.
• Adds a reference to the upstream PR comment documenting the v3 backport.

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[puzrin]

I've updated version info in package source advisory GHSA-h67p-54hq-rp68

[realtebo]

Please, merge this ASAP !

[advisory-database]

Hi @G-Rath! Thank you so much for contributing to the GitHub Advisory Database. This database is free, open, and accessible to all, and it's people like you who make it great. Thanks for choosing to help others. We hope you send in more contributions in the future!