{"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_01M5KF8MNA3A73K2MD6JFH8QE0","modified_at":"2026-07-20T21:30:45.969881443Z","published_at":"2026-07-20T21:24:42Z","references":["https://osv.dev/vulnerability/GHSA-8mpj-m6qm-5qr8","https://github.com/lepture/mistune/security/advisories/GHSA-8mpj-m6qm-5qr8","https://nvd.nist.gov/vuln/detail/CVE-2026-59927","https://github.com/lepture/mistune/commit/1bef343ade163fc3bb95572b15be720084cdb993","https://github.com/lepture/mistune","https://github.com/lepture/mistune/releases/tag/v3.3.0","https://github.com/pypa/advisory-database/tree/main/vulns/mistune/PYSEC-2026-2215.yaml"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-8mpj-m6qm-5qr8","url":"https://osv.dev/vulnerability/GHSA-8mpj-m6qm-5qr8"}],"summary":"Mistune directives/include: mutual `.. include::` recursion crashes the renderer with `RecursionError`, denial of service via two attacker-controlled markdown files"}