CVE-2026-79664

Summary

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.

Affected Software

VendorProductVersion RangeStatus
lin-snowEch00 < 4.7.3affected
lin-snowEch04.7.3unaffected

Weaknesses

  • CWE-613: Insufficient Session Expiration

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: total

Additional References

References