High severity7.4NVD Advisory· Published Aug 25, 2026· Updated Sep 23, 2026
CVE-2026-79664
CVE-2026-79664
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
2News mentions
1- Lin Snow Ech0: Fifteen Auth, SSRF, and XSS Flaws Disclosed TogetherVypr Intelligence · Aug 25, 2026