{"id":"GHSA-w73w-5m7g-f7qc","summary":"Authorization bypass in github.com/dgrijalva/jwt-go","details":"jwt-go allows attackers to bypass intended access restrictions in situations with `[]string{}` for `m[\"aud\"]` (which is allowed by the specification). Because the type assertion fails, \"\" is the value of aud. This is a security problem if the JWT token is presented to a service that lacks its own audience check. There is no patch available and users of jwt-go are advised to migrate to [golang-jwt](https://github.com/golang-jwt/jwt) at version 3.2.1","aliases":["CVE-2020-26160","GO-2020-0017","SNYK-GOLANG-GITHUBCOMDGRIJALVAJWTGO-596515"],"modified":"2026-07-17T21:11:26.720789731Z","published":"2021-05-18T21:08:21Z","database_specific":{"nvd_published_at":"2020-09-30T18:15:00Z","cwe_ids":["CWE-287","CWE-755"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2021-05-18T20:54:59Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26160"},{"type":"WEB","url":"https://github.com/dgrijalva/jwt-go/issues/422"},{"type":"WEB","url":"https://github.com/dgrijalva/jwt-go/issues/462"},{"type":"WEB","url":"https://github.com/dgrijalva/jwt-go/pull/426"},{"type":"WEB","url":"https://github.com/dgrijalva/jwt-go/commit/ec0a89a131e3e8567adcb21254a5cd20a70ea4ab"},{"type":"PACKAGE","url":"https://github.com/dgrijalva/jwt-go"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2020-0017"},{"type":"WEB","url":"https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMDGRIJALVAJWTGO-596515"}],"affected":[{"package":{"name":"github.com/dgrijalva/jwt-go","ecosystem":"Go","purl":"pkg:golang/github.com/dgrijalva/jwt-go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-20150717181359-44718f8a89b0"},{"last_affected":"3.2.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/05/GHSA-w73w-5m7g-f7qc/GHSA-w73w-5m7g-f7qc.json"}},{"package":{"name":"github.com/dgrijalva/jwt-go/v4","ecosystem":"Go","purl":"pkg:golang/github.com/dgrijalva/jwt-go/v4"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.0.0-preview1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/05/GHSA-w73w-5m7g-f7qc/GHSA-w73w-5m7g-f7qc.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}