{"id":"CVE-2020-36564","aliases":["GHSA-5x84-q523-vvwr","GO-2020-0049"],"url":"https://o3.security/vulnerability/CVE-2020-36564","summary":"nosurf vulnerable to improper input validation","details":"Due to improper validation of caller input, validation is silently disabled if the provided expected token is malformed, causing any user supplied token to be considered valid.","published":"2022-12-27T22:15:11.673Z","modified":"2026-07-08T19:44:28.287424Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/justinas/nosurf","fixedVersion":"1.1.1"}],"fix":{"url":"https://github.com/justinas/nosurf/commit/4d86df7a4affa1fa50ab39fb09aac56c3ce9c314","label":"justinas/nosurf@4d86df7"},"references":[{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2020-0049"},{"type":"FIX","url":"https://github.com/justinas/nosurf/commit/4d86df7a4affa1fa50ab39fb09aac56c3ce9c314"},{"type":"FIX","url":"https://github.com/justinas/nosurf/pull/60"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T19:44:28.287424Z"}}