{"action":"Upgrade league/commonmark to 2.9.0 or later.","affected":[{"fixed":"2.9.0","introduced":"2.0.0"}],"component":"league/commonmark","cve_ids":[],"ecosystem":"Packagist","exploited":false,"fixed_versions":["2.9.0"],"ghsa_id":"GHSA-mj63-m3rc-8ppr","id":"tcs_01M5KF5M50G1P7KWQRZK9WVVY3","modified_at":"2026-08-06T20:45:15.556829535Z","published_at":"2026-08-06T20:42:54Z","references":["https://osv.dev/vulnerability/GHSA-mj63-m3rc-8ppr","https://github.com/thephpleague/commonmark/security/advisories/GHSA-mj63-m3rc-8ppr","https://github.com/thephpleague/commonmark/commit/b5ac8c3947ca81844e85a09c7e0a5b4148bde2e1","https://github.com/thephpleague/commonmark","https://github.com/thephpleague/commonmark/releases/tag/2.9.0"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-mj63-m3rc-8ppr","url":"https://osv.dev/vulnerability/GHSA-mj63-m3rc-8ppr"}],"summary":"league/commonmark: Denial of service via deeply nested XML output"}