{"cve":"CVE-2020-26160","nvd":{"published":"2020-09-30T18:15:27.397","modified":"2026-06-17T03:07:43.907","status":"Modified","description":"jwt-go before 4.0.0-preview1 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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-287","CWE-755"],"references":["https://github.com/dgrijalva/jwt-go/pull/426","https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMDGRIJALVAJWTGO-596515","https://github.com/dgrijalva/jwt-go/pull/426","https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMDGRIJALVAJWTGO-596515"],"products":["jwt-go_project:jwt-go"],"source":"nvd","synced_at":"2026-10-19T21:09:53.489947993+00:00"},"epss":{"cve":"CVE-2020-26160","score":0.02158,"percentile":0.82195,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-w73w-5m7g-f7qc","url":"https://osv.dev/vulnerability/GHSA-w73w-5m7g-f7qc","summary":"Authorization bypass in github.com/dgrijalva/jwt-go","modified":"2026-09-10T03:49:05.293395113Z","packages":[{"ecosystem":"Go","name":"github.com/dgrijalva/jwt-go","purl":"pkg:golang/github.com/dgrijalva/jwt-go","ranges":[">=0.0.0-20150717181359-44718f8a89b0 <=3.2.0"],"fixed":[]},{"ecosystem":"Go","name":"github.com/dgrijalva/jwt-go/v4","purl":"pkg:golang/github.com/dgrijalva/jwt-go/v4","ranges":["<4.0.0-preview1"],"fixed":["4.0.0-preview1"]}]},{"id":"GO-2020-0017","url":"https://osv.dev/vulnerability/GO-2020-0017","summary":"Authorization bypass in github.com/dgrijalva/jwt-go","modified":"2026-07-08T06:49:40.526819528Z","packages":[{"ecosystem":"Go","name":"github.com/dgrijalva/jwt-go","purl":"pkg:golang/github.com/dgrijalva/jwt-go","ranges":[">=0.0.0-20150717181359-44718f8a89b0"],"fixed":[]},{"ecosystem":"Go","name":"github.com/dgrijalva/jwt-go/v4","purl":"pkg:golang/github.com/dgrijalva/jwt-go/v4","ranges":["<4.0.0-preview1"],"fixed":["4.0.0-preview1"]}]}],"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."]}