{"action":"Upgrade mistune to 3.3.0 or later.","affected":[{"fixed":"3.3.0","introduced":"0"}],"component":"mistune","cve_ids":["CVE-2026-59927"],"ecosystem":"PyPI","epss":0.00529,"exploited":false,"fixed_versions":["3.3.0"],"ghsa_id":"GHSA-8mpj-m6qm-5qr8","id":"tcs_01M5KGY4BJWCVPK6BS9ZG0V57W","modified_at":"2026-07-13T07:15:18.817354531Z","published_at":"2026-07-08T17:17:28.450Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2215","https://github.com/lepture/mistune/releases/tag/v3.3.0","https://github.com/lepture/mistune/commit/1bef343ade163fc3bb95572b15be720084cdb993","https://github.com/lepture/mistune/security/advisories/GHSA-8mpj-m6qm-5qr8"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"PYSEC-2026-2215","url":"https://osv.dev/vulnerability/PYSEC-2026-2215"}],"summary":"Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the Include directive in src/mistune/directives/include.py detects only direct self-includes and not indirect cycles, al"}