{"action":"Upgrade getgrav/grav to 2.0.0 or later.","affected":[{"fixed":"2.0.0","introduced":"2.0.0-rc.9"}],"component":"getgrav/grav","cve_ids":["CVE-2026-58657"],"ecosystem":"Packagist","epss":0.00267,"exploited":false,"fixed_versions":["2.0.0"],"ghsa_id":"GHSA-ffmg-hfvg-jhg9","id":"tcs_01M5KF1RFCC9DZ4B892WPQBA7X","modified_at":"2026-09-16T22:30:08.134393419Z","published_at":"2026-09-16T22:14:53Z","references":["https://osv.dev/vulnerability/GHSA-ffmg-hfvg-jhg9","https://github.com/getgrav/grav/security/advisories/GHSA-ffmg-hfvg-jhg9","https://nvd.nist.gov/vuln/detail/CVE-2026-58657","https://github.com/getgrav/grav/commit/6582166173bb8eb5869d96aea384e0e73777c94c","https://github.com/getgrav/grav/commit/e03d29aa0d3ece16d73c1ffccfa78df8bf5f28b8","https://github.com/getgrav/grav","https://www.vulncheck.com/advisories/grav-stored-css-injection-via-markdown-image-resize-action"],"severity":{"label":"medium","score":4.8},"sources":[{"source":"osv","source_id":"GHSA-ffmg-hfvg-jhg9","url":"https://osv.dev/vulnerability/GHSA-ffmg-hfvg-jhg9"}],"summary":"Grav: Stored CSS injection via Markdown image resize() bypasses prior media style sanitizers in Grav"}