CVE-2026-66400

Medium

Description

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.

SeverityMedium

CVSS4.8

Exploit probability—

Product

Grav

PublishedJul 29, 2026

First seenJul 29, 2026

Weakness typeCWE-613CWE-613

How to fix

Update

getgrav grav3.8.13 or later

Vendor advisories

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

Affected products

Product	Affected versions	Fixed in
getgrav grav	v < 3.8.13	3.8.13

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