{"action":"Upgrade postcss to 8.5.12 or later.","affected":[{"fixed":"8.5.12","introduced":"0"}],"component":"postcss","cve_ids":["CVE-2026-45623"],"ecosystem":"npm","epss":0.00608,"exploited":false,"fixed_versions":["8.5.12"],"ghsa_id":"GHSA-6g55-p6wh-862q","id":"tcs_01M5KF6YQH8MJG7TEWGCXN4S93","modified_at":"2026-09-10T03:51:10.752909750Z","published_at":"2026-07-23T15:06:16Z","references":["https://osv.dev/vulnerability/GHSA-6g55-p6wh-862q","https://github.com/postcss/postcss/security/advisories/GHSA-6g55-p6wh-862q","https://github.com/postcss/postcss/commit/aaec7b78b3ce2792585b4b300ef1bd5dd5b3e8ad","https://github.com/postcss/postcss/commit/c64b7488d2731dfa16213739b42c34faf5a9eba3","https://github.com/postcss/postcss","https://github.com/postcss/postcss/releases/tag/8.5.12"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-6g55-p6wh-862q","url":"https://osv.dev/vulnerability/GHSA-6g55-p6wh-862q"}],"summary":"PostCSS: Arbitrary file read and information disclosure via attacker-controlled sourceMappingURL in CSS comments"}