{"action":"Upgrade mermaid to 10.9.6 or later.","affected":[{"fixed":"11.15.0","introduced":"11.0.0-alpha.1"},{"fixed":"10.9.6","introduced":"0"}],"component":"mermaid","cve_ids":["CVE-2026-41148"],"ecosystem":"npm","epss":0.00603,"exploited":false,"fixed_versions":["11.15.0","10.9.6"],"ghsa_id":"GHSA-xcj9-5m2h-648r","id":"tcs_01M5KGHP24CFEV1F9DAV76PVGR","modified_at":"2026-09-10T03:51:07.282173986Z","published_at":"2026-05-11T19:36:41Z","references":["https://osv.dev/vulnerability/GHSA-xcj9-5m2h-648r","https://github.com/mermaid-js/mermaid/security/advisories/GHSA-xcj9-5m2h-648r","https://nvd.nist.gov/vuln/detail/CVE-2026-41148","https://github.com/mermaid-js/mermaid/commit/8fead23c59166b7bab6a39eac81acebee2859102","https://github.com/mermaid-js/mermaid/commit/e9b0f34d8d82a6260077764ee45e1d7d90957a0f","https://github.com/mermaid-js/mermaid","https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.15.0","https://github.com/mermaid-js/mermaid/releases/tag/v10.9.6","https://mermaid.js.org/config/schema-docs/config.html#securitylevel"],"severity":{"label":"medium"},"sources":[{"source":"osv","source_id":"GHSA-xcj9-5m2h-648r","url":"https://osv.dev/vulnerability/GHSA-xcj9-5m2h-648r"}],"summary":"Mermaid: Improper sanitization of `classDefs` in diagrams leads to CSS injection"}