CVE-2026-66400

Summary

Grav Login Plugin versions before 3.8.13 contain an insufficient session expiration vulnerability in TokenStorage.php where the findTriplet() method fails to properly validate Remember Me token timestamps. Attackers with a captured Remember Me cookie can authenticate indefinitely instead of the configured timeout period, as the expiry check compares an array to a scalar value which always evaluates incorrectly in PHP.

Affected Software

Weaknesses

• CWE-613: Insufficient Session Expiration

ADP Enrichment

CISA ADP Vulnrichment

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

Additional References

• https://github.com/getgrav/grav/security/advisories/GHSA-mj78-8gwc-vxjj

References

• https://github.com/getgrav/grav/security/advisories/GHSA-mj78-8gwc-vxjj
• https://www.vulncheck.com/advisories/grav-login-plugin-before-insufficient-session-expiration

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