{"action":"Upgrade league/commonmark to 2.9.0 or later.","affected":[{"fixed":"2.9.0","introduced":"1.5.0"}],"component":"league/commonmark","cve_ids":[],"ecosystem":"Packagist","exploited":false,"fixed_versions":["2.9.0"],"ghsa_id":"GHSA-jfm3-95jq-q3rf","id":"tcs_01M5KF4GRC2CMM163BE68M9SC7","modified_at":"2026-08-06T20:45:15.564084730Z","published_at":"2026-08-06T20:40:53Z","references":["https://osv.dev/vulnerability/GHSA-jfm3-95jq-q3rf","https://github.com/thephpleague/commonmark/security/advisories/GHSA-jfm3-95jq-q3rf","https://github.com/thephpleague/commonmark/commit/66028124a17ba193da7b11cc3dfda92df21bfbf4","https://github.com/thephpleague/commonmark","https://github.com/thephpleague/commonmark/releases/tag/2.9.0"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-jfm3-95jq-q3rf","url":"https://osv.dev/vulnerability/GHSA-jfm3-95jq-q3rf"}],"summary":"league/commonmark: Denial of service via duplicate footnote definitions"}