{"action":"Upgrade js-yaml to 3.15.0 or later.","affected":[{"fixed":"3.15.0","introduced":"3.0.0"},{"fixed":"4.3.0","introduced":"4.0.0"}],"component":"js-yaml","cve_ids":["CVE-2026-59869"],"ecosystem":"npm","epss":0.00585,"exploited":false,"fixed_versions":["3.15.0","4.3.0"],"ghsa_id":"GHSA-52cp-r559-cp3m","id":"tcs_01M5KF26EC2AY7D1TCF2XC7909","modified_at":"2026-09-10T03:50:12.263307536Z","published_at":"2026-07-20T21:19:09Z","references":["https://osv.dev/vulnerability/GHSA-52cp-r559-cp3m","https://github.com/nodeca/js-yaml/security/advisories/GHSA-52cp-r559-cp3m","https://nvd.nist.gov/vuln/detail/CVE-2026-59869","https://github.com/nodeca/js-yaml/commit/24f13e79ee1343a7e30bd6f6c9d9cdbf0ac9b2b7","https://github.com/nodeca/js-yaml/commit/59423c6f8cdc78742ac00e25a4dd39ef16b702e4","https://github.com/nodeca/js-yaml","https://github.com/nodeca/js-yaml/releases/tag/3.15.0","https://github.com/nodeca/js-yaml/releases/tag/4.3.0"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-52cp-r559-cp3m","url":"https://osv.dev/vulnerability/GHSA-52cp-r559-cp3m"}],"summary":"js-yaml: YAML merge-key chains can force quadratic CPU consumption"}