CVE-2026-79664CWE-613

CVE-2026-79664

High · published August 25, 2026

CVSS v3.1
7.4
EPSS
0%
Percentile
18.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
9.1 · CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00274 · 18.8th percentile
Weakness
CWE-613 · Insufficient Session Expiration
Published
2026-08-25T16:16Z
References (3)
https://github.com/lin-snow/Ech0/security/advisories/GHSA-fpw6-hrg5-q5x5 · [email protected]https://www.vulncheck.com/advisories/ech0-before-access-token-revocation-bypass · [email protected]https://github.com/lin-snow/Ech0/security/advisories/GHSA-fpw6-hrg5-q5x5 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 27 AUG 06:46Z
    EPSS moved — → 0%
    epss
  • 25 AUG 11:33Z
    Ech0 before 4.7.3 Access Token Revocation Bypass
    cvelistv5