{"action":"Upgrade mistune to 3.3.0 or later.","affected":[{"fixed":"3.3.0","introduced":"0"}],"component":"mistune","cve_ids":["CVE-2026-59922"],"ecosystem":"PyPI","epss":0.00644,"exploited":false,"fixed_versions":["3.3.0"],"ghsa_id":"GHSA-c8j7-8cv4-2xmq","id":"tcs_01M5KFCH974V98PS4HWDXD7AAG","modified_at":"2026-07-20T21:46:39.999565306Z","published_at":"2026-07-20T21:34:37Z","references":["https://osv.dev/vulnerability/GHSA-c8j7-8cv4-2xmq","https://github.com/lepture/mistune/security/advisories/GHSA-c8j7-8cv4-2xmq","https://nvd.nist.gov/vuln/detail/CVE-2026-59922","https://github.com/lepture/mistune/commit/96d0f57f8fe9eeb06bb4cff521962a27d7c402e7","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-2026-2210.yaml"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-c8j7-8cv4-2xmq","url":"https://osv.dev/vulnerability/GHSA-c8j7-8cv4-2xmq"}],"summary":"Mistune plugins/formatting: quadratic-time parsing on long runs of `~~x~~`, `==x==`, and `^^x^^` markers (strikethrough / mark / insert)"}