CRITICAL 9.1 NVD
CVE-2026-79664
Ech0 before 4.7.3 fails to properly revoke access tokens created with never-expire option, allowing attackers to maintain perpetual authenticated access after t
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.
References
- https://github.com/lin-snow/Ech0/security/advisories/GHSA-fpw6-hrg5-q5x5
- https://www.vulncheck.com/advisories/ech0-before-access-token-revocation-bypass
This critical severity vulnerability with a CVSS score of 9.1 was published on 2026-08-25 via NVD.
Risk Timeline
CVE Disclosed2026-08-25 · -1 days ago
Remediation Resources
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