{"action":"Upgrade postcss to 8.5.18 or later.","affected":[{"fixed":"8.5.18","introduced":"0"}],"component":"postcss","cve_ids":["CVE-2026-73646"],"ecosystem":"npm","epss":0.0053,"exploited":false,"fixed_versions":["8.5.18"],"ghsa_id":"GHSA-r28c-9q8g-f849","id":"tcs_01M5KG7KF2A58K3FVCPS6T1D35","modified_at":"2026-09-10T03:50:52.854537677Z","published_at":"2026-07-24T16:24:55Z","references":["https://osv.dev/vulnerability/GHSA-r28c-9q8g-f849","https://github.com/postcss/postcss/security/advisories/GHSA-r28c-9q8g-f849","https://github.com/postcss/postcss/commit/95663d3eb7ba26f4854dd19d3b4f4425760cf56c","https://github.com/postcss/postcss","https://github.com/postcss/postcss/releases/tag/8.5.18"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-r28c-9q8g-f849","url":"https://osv.dev/vulnerability/GHSA-r28c-9q8g-f849"}],"summary":"PostCSS: Path Traversal in Previous Source Map Auto-Loading (sourceMappingURL) leads to Arbitrary .map File Disclosure"}