{"id":"CVE-2026-59869","revision":"16d7fea65c034c578efca61d899b4ff9","records":[{"revision":"16d7fea65c034c578efca61d899b4ff9","observedAt":"2026-10-27T15:15:33.457+00:00","statement":{"source":"nvd","id":"CVE-2026-59869","aliases":[],"title":"js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each…","description":"js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each mapping merges the previous one. This issue is fixed in versions 3.15.0 and 4.3.0.","state":0,"publishedAt":"2026-07-08T16:16:33.423+00:00","modifiedAt":"2026-10-25T20:10:00.147+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/nodeca/js-yaml/commit/24f13e79ee1343a7e30bd6f6c9d9cdbf0ac9b2b7","https://github.com/nodeca/js-yaml/commit/59423c6f8cdc78742ac00e25a4dd39ef16b702e4","https://github.com/nodeca/js-yaml/releases/tag/3.15.0","https://github.com/nodeca/js-yaml/releases/tag/4.3.0","https://github.com/nodeca/js-yaml/security/advisories/GHSA-52cp-r559-cp3m"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-59869","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-407"],"productCriteria":["cpe:2.3:a:nodeca:js-yaml:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-07-08T16:16:33.423","lastModified":"2026-10-25T20:10:00.147"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-59869","identifiers":["CVE-2026-59869"]},"retained":false,"historicalAffected":[]}],"coverage":[]}