{"action":"Upgrade mistune to 3.3.0 or later.","affected":[{"fixed":"3.3.0","introduced":"0"}],"component":"mistune","cve_ids":["CVE-2026-59923"],"ecosystem":"PyPI","epss":0.00348,"exploited":false,"fixed_versions":["3.3.0"],"ghsa_id":"GHSA-8c25-4j27-2rv3","id":"tcs_01M5KF7VBXKYNZATNX2SBE4TRQ","modified_at":"2026-07-20T21:46:43.351006286Z","published_at":"2026-07-20T21:32:49Z","references":["https://osv.dev/vulnerability/GHSA-8c25-4j27-2rv3","https://github.com/lepture/mistune/security/advisories/GHSA-8c25-4j27-2rv3","https://nvd.nist.gov/vuln/detail/CVE-2026-59923","https://github.com/lepture/mistune/commit/c7101fcbb6e8790e8e39157c5ca2238fc6dd6cbc","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-2026-2211.yaml"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"GHSA-8c25-4j27-2rv3","url":"https://osv.dev/vulnerability/GHSA-8c25-4j27-2rv3"}],"summary":"Mistune: XSS via percent-encoded javascript URI bypass in safe_url()"}