{"action":"Upgrade mistune to 3.2.1 or later.","affected":[{"fixed":"3.2.1","introduced":"0"}],"component":"mistune","cve_ids":["CVE-2026-44898"],"ecosystem":"PyPI","epss":0.00271,"exploited":false,"fixed_versions":["3.2.1"],"ghsa_id":"GHSA-6269-cqxg-mhhv","id":"tcs_01M5KGY36HBYTKY1PMACVG2TWH","modified_at":"2026-07-13T07:15:28.986856174Z","published_at":"2026-05-26T21:16:39.810Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2208","https://github.com/lepture/mistune/releases/tag/v3.2.1","https://github.com/lepture/mistune/security/advisories/GHSA-6269-cqxg-mhhv"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"PYSEC-2026-2208","url":"https://osv.dev/vulnerability/PYSEC-2026-2208"}],"summary":"Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, render_toc_ul() builds a <ul> table-of-contents tree from a list of (level, id, text) tuples. Both the id value (used as"}