{"action":"Upgrade mermaid to 10.9.8 or later.","affected":[{"fixed":"11.16.1","introduced":"11.0.0-alpha.1"},{"fixed":"10.9.8","introduced":"0"}],"component":"mermaid","cve_ids":["CVE-2026-50159"],"ecosystem":"npm","epss":0.00603,"exploited":false,"fixed_versions":["11.16.1","10.9.8"],"ghsa_id":"GHSA-6x64-9x62-f2gx","id":"tcs_01M5KF86X1CMBH890KS39ZNCHJ","modified_at":"2026-09-10T03:51:13.166807946Z","published_at":"2026-08-06T19:55:31Z","references":["https://osv.dev/vulnerability/GHSA-6x64-9x62-f2gx","https://github.com/mermaid-js/mermaid/security/advisories/GHSA-6x64-9x62-f2gx","https://github.com/mermaid-js/mermaid/pull/8022","https://github.com/mermaid-js/mermaid/commit/12d472c9ed43f94814b110da8d7a9ae6dd5266ed","https://github.com/mermaid-js/mermaid/commit/7e83f1533318b307764d961906a73377266f4c5e","https://github.com/mermaid-js/mermaid","https://github.com/mermaid-js/mermaid/releases/tag/mermaid@11.16.1","https://github.com/mermaid-js/mermaid/releases/tag/v10.9.8"],"severity":{"label":"medium"},"sources":[{"source":"osv","source_id":"GHSA-6x64-9x62-f2gx","url":"https://osv.dev/vulnerability/GHSA-6x64-9x62-f2gx"}],"summary":"Mermaid allows CSS injection applying to sibling elements of the diagram"}