Medium 4.8Published Jul 29, 2026

CVE-2026-66400Grav Login Plugin before 3.8.13 Insufficient Session Expiration

Updated under an hour ago (Oct 28, 2026, 4:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 4.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-613
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Jul 29, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

getgrav grav getgrav:grav (from the name)	before 3.8.13; 3.8.13 not affected	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.