Vulnerability Description
Ech0 before 4.7.3 fails to properly revoke access tokens created with never-expire option, allowing attackers to maintain perpetual authenticated access after token theft. Three independent revocation mechanisms fail: logout panics on nil ExpiresAt field, RevokeToken skips when remainTTL is zero, and admin delete does not blacklist the JTI, leaving stolen tokens cryptographically valid until JWT secret rotation.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/lin-snow/Ech0/security/advisories/GHSA-fpw6-hrg5-q5x5
- https://www.vulncheck.com/advisories/ech0-before-access-token-revocation-bypass
- https://github.com/lin-snow/Ech0/security/advisories/GHSA-fpw6-hrg5-q5x5
FAQ
What is CVE-2026-79664?
CVE-2026-79664 is a vulnerability with a CVSS score of 7.4 (HIGH). Ech0 before 4.7.3 fails to properly revoke access tokens created with never-expire option, allowing attackers to maintain perpetual authenticated access after token theft. Three independent revocation...
How severe is CVE-2026-79664?
CVE-2026-79664 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-79664?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.