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 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 v3 7.4 HIGH

7.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-25 12:16

Updated : 2026-08-25 13:19

NVD link : CVE-2026-79664

Mitre link : CVE-2026-79664

CVE.ORG link : CVE-2026-79664

JSON object : View

Products Affected

No product.

CWE

CWE-613

Insufficient Session Expiration

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