CVE-2026-79664

CVSS 9.1 (critical) · published 2026-08-25

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.

Weakness: CWE-613

Source: NVD CVE-2026-79664

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

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