CVE-2026-53654: Getgrav Grav

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

Grav is a file-based Web platform. Prior to 3.8.5, the Login plugin twofa_cancel task accepts a client-controlled _redirect field without a nonce and allows an unauthenticated request to set an external http, https, or protocol-relative Location target. Controller::execute() applies the field when taskTwofa_cancel() sets no redirect, and Grav::getRedirectResponse() accepts the target through Uri::isExternal(), enabling phishing redirects from a trusted Grav host. This issue is fixed in version 3.8.5.

Affected products

• Getgrav Grav: before 3.8.5 (fixed in 3.8.5)

Published 2026-08-19. Last modified 2026-09-09.