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js-yaml: Quadratic-complexity (O(n^2)) DoS via !!omap tag in YAML11_SCHEMA
js-yaml: Quadratic-complexity (O(n^2)) DoS via !!omap tag in YAML11_SCHEMA
Affected packages
- js-yaml
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- 0.41%
- EPSS percentile
- 33.7%
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs. This advisory is in the top 34%.
Sources
- https://github.com/nodeca/js-yaml/security/advisories/GHSA-724g-mxrg-4qvm
- https://nvd.nist.gov/vuln/detail/CVE-2026-59870
- https://github.com/nodeca/js-yaml/commit/39f3211a2f01b3c6982710cf21434ab7060acefe
- https://github.com/nodeca/js-yaml
- https://github.com/nodeca/js-yaml/releases/tag/5.2.1
Structured record: https://osv.dev/vulnerability/GHSA-724g-mxrg-4qvm
Recommended response stack
Snyk — Scan your dependencies in CI and fix this vulnerability.→Socket — Detect malicious and compromised packages before they ship.→
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