{"action":"Upgrade litestar to 2.20.0 or later.","affected":[{"fixed":"2.20.0","introduced":"2.19.0"}],"component":"litestar","cve_ids":["CVE-2026-25479"],"ecosystem":"PyPI","epss":0.00358,"exploited":false,"fixed_versions":["2.20.0"],"ghsa_id":"GHSA-93ph-p7v4-hwh4","id":"tcs_01M5KF9MZ30YQ910AVT56GY62S","modified_at":"2026-07-13T07:26:17.638939942Z","published_at":"2026-02-09T17:19:00Z","references":["https://osv.dev/vulnerability/GHSA-93ph-p7v4-hwh4","https://github.com/litestar-org/litestar/security/advisories/GHSA-93ph-p7v4-hwh4","https://nvd.nist.gov/vuln/detail/CVE-2026-25479","https://github.com/litestar-org/litestar/commit/06b36f481d1bfea6f19995cfb4f203aba45c4ace","https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0","https://github.com/litestar-org/litestar","https://github.com/litestar-org/litestar/releases/tag/v2.20.0"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"GHSA-93ph-p7v4-hwh4","url":"https://osv.dev/vulnerability/GHSA-93ph-p7v4-hwh4"}],"summary":"Litestar's AllowedHosts has a validation bypass due to unescaped regex metacharacters in configured host patterns"}