{"action":"Upgrade justhtml to 1.14.0 or later.","affected":[{"fixed":"1.14.0","introduced":"1.13.0"}],"component":"justhtml","cve_ids":["CVE-2026-5751"],"ecosystem":"PyPI","epss":0.00263,"exploited":false,"fixed_versions":["1.14.0"],"ghsa_id":"GHSA-r758-8hxw-4845","id":"tcs_01M5KFXE7PWZERC4CH1SQAEGS0","modified_at":"2026-08-24T03:55:59.795016825Z","published_at":"2026-04-08T00:06:17Z","references":["https://osv.dev/vulnerability/GHSA-r758-8hxw-4845","https://github.com/EmilStenstrom/justhtml/security/advisories/GHSA-r758-8hxw-4845","https://github.com/EmilStenstrom/justhtml/commit/8adc4dfe31723dc522f44338f9bd98381c92b076","https://github.com/EmilStenstrom/justhtml","https://github.com/EmilStenstrom/justhtml/releases/tag/v1.14.0"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"GHSA-r758-8hxw-4845","url":"https://osv.dev/vulnerability/GHSA-r758-8hxw-4845"},{"source":"nvd","source_id":"CVE-2026-5751","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5751"}],"summary":"justhtml: Mutation XSS with custom foreign-namespace sanitization policies"}