{"action":"Upgrade mistune to 3.3.0 or later.","affected":[{"fixed":"3.3.0","introduced":"0"}],"component":"mistune","cve_ids":["CVE-2026-59929"],"ecosystem":"PyPI","epss":0.00341,"exploited":false,"fixed_versions":["3.3.0"],"ghsa_id":"GHSA-qfrw-5rxm-mhh2","id":"tcs_01M5KGY5GGSGCFKWWS9CXXPC8T","modified_at":"2026-07-13T07:15:18.820531742Z","published_at":"2026-07-08T17:17:28.737Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2217","https://github.com/lepture/mistune/releases/tag/v3.3.0","https://github.com/lepture/mistune/commit/c7101fcbb6e8790e8e39157c5ca2238fc6dd6cbc","https://github.com/lepture/mistune/security/advisories/GHSA-qfrw-5rxm-mhh2"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"PYSEC-2026-2217","url":"https://osv.dev/vulnerability/PYSEC-2026-2217"}],"summary":"Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the safe_url filter in src/mistune/renderers/html.py blocks only javascript:, vbscript:, file:, and data: schemes, allow"}