{"cve":"CVE-2020-36564","nvd":{"published":"2022-12-27T22:15:11.673","modified":"2026-06-17T03:15:44.917","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-20"],"references":["https://github.com/justinas/nosurf/commit/4d86df7a4affa1fa50ab39fb09aac56c3ce9c314","https://github.com/justinas/nosurf/pull/60","https://pkg.go.dev/vuln/GO-2020-0049","https://github.com/justinas/nosurf/commit/4d86df7a4affa1fa50ab39fb09aac56c3ce9c314","https://github.com/justinas/nosurf/pull/60"],"products":["nosurf_project:nosurf"],"source":"nvd","synced_at":"2026-10-19T21:37:31.370122805+00:00"},"epss":{"cve":"CVE-2020-36564","score":0.00783,"percentile":0.56045,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-5x84-q523-vvwr","url":"https://osv.dev/vulnerability/GHSA-5x84-q523-vvwr","summary":"nosurf vulnerable to improper input validation","modified":"2023-11-08T04:03:47.666515Z","packages":[{"ecosystem":"Go","name":"github.com/justinas/nosurf","purl":"pkg:golang/github.com/justinas/nosurf","ranges":["<1.1.1"],"fixed":["1.1.1"]}]},{"id":"GO-2020-0049","url":"https://osv.dev/vulnerability/GO-2020-0049","summary":"Improper input validation in github.com/justinas/nosurf","modified":"2024-05-20T16:03:47Z","packages":[{"ecosystem":"Go","name":"github.com/justinas/nosurf","purl":"pkg:golang/github.com/justinas/nosurf","ranges":["<1.1.1"],"fixed":["1.1.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}