{"action":"Upgrade js-yaml to 3.15.0 or later.","affected":[{"fixed":"4.2.0","introduced":"4.0.0"},{"fixed":"3.15.0","introduced":"0"}],"component":"js-yaml","cve_ids":["CVE-2026-53550"],"ecosystem":"npm","epss":0.00415,"exploited":false,"fixed_versions":["4.2.0","3.15.0"],"ghsa_id":"GHSA-h67p-54hq-rp68","id":"tcs_01M5KFTAB9YBX7FWJNRCY5BBR6","modified_at":"2026-09-10T03:50:49.729923880Z","published_at":"2026-06-15T17:15:07Z","references":["https://osv.dev/vulnerability/GHSA-h67p-54hq-rp68","https://github.com/nodeca/js-yaml/security/advisories/GHSA-h67p-54hq-rp68","https://nvd.nist.gov/vuln/detail/CVE-2026-53550","https://github.com/nodeca/js-yaml"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-h67p-54hq-rp68","url":"https://osv.dev/vulnerability/GHSA-h67p-54hq-rp68"}],"summary":"JS-YAML: Quadratic-complexity DoS in merge key handling via repeated aliases"}