{"action":"Upgrade litestar to 2.20.0 or later.","affected":[{"fixed":"2.20.0","introduced":"2.19.0"}],"component":"litestar","cve_ids":["CVE-2026-25478"],"ecosystem":"PyPI","epss":0.00446,"exploited":false,"fixed_versions":["2.20.0"],"ghsa_id":"GHSA-2p2x-hpg8-cqp2","id":"tcs_01M5KESX15WQPPG68SJ6JHMNJT","modified_at":"2026-07-13T07:26:21.863580114Z","published_at":"2026-02-09T17:18:52Z","references":["https://osv.dev/vulnerability/GHSA-2p2x-hpg8-cqp2","https://github.com/litestar-org/litestar/security/advisories/GHSA-2p2x-hpg8-cqp2","https://nvd.nist.gov/vuln/detail/CVE-2026-25478","https://github.com/litestar-org/litestar/commit/eb87703b309efcc0d1b087dcb12784e76b003d5a","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":"high","score":7.4},"sources":[{"source":"osv","source_id":"GHSA-2p2x-hpg8-cqp2","url":"https://osv.dev/vulnerability/GHSA-2p2x-hpg8-cqp2"}],"summary":"Litestar's CORS origin allowlist has a bypass due to unescaped regex metacharacters in allowed origins"}