{"action":"Upgrade league/commonmark to 2.8.1 or later.","affected":[{"fixed":"2.8.1","introduced":"2.0.0"}],"component":"league/commonmark","cve_ids":["CVE-2026-30838"],"ecosystem":"Packagist","epss":0.00245,"exploited":false,"fixed_versions":["2.8.1"],"ghsa_id":"GHSA-4v6x-c7xx-hw9f","id":"tcs_01M5KEVAAG6CCQ8N3F37RHYBC3","modified_at":"2026-03-20T21:35:35.482232Z","published_at":"2026-03-06T23:27:03Z","references":["https://osv.dev/vulnerability/GHSA-4v6x-c7xx-hw9f","https://github.com/thephpleague/commonmark/security/advisories/GHSA-4v6x-c7xx-hw9f","https://nvd.nist.gov/vuln/detail/CVE-2026-30838","https://commonmark.thephpleague.com/extensions/disallowed-raw-html","https://github.com/thephpleague/commonmark"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"GHSA-4v6x-c7xx-hw9f","url":"https://osv.dev/vulnerability/GHSA-4v6x-c7xx-hw9f"},{"source":"nvd","source_id":"CVE-2026-30838","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30838"}],"summary":"CommonMark has DisallowedRawHtml extension bypass via whitespace in HTML tag names"}