CVE-2026-62672: Getgrav Grav

Medium severity, CVSS 6.0. EPSS: 0.4% chance of exploitation in the next 30 days.

Grav is a file-based Web platform. Prior to 2.0.4, Grav allowlists the regex_replace filter and function in system/config/security.yaml, and GravExtension::regexReplace() passes an editor-controlled pattern directly to preg_replace(). When security.twig_content.process_enabled is enabled, an authenticated page editor can publish a catastrophically backtracking pattern that consumes PHP worker CPU and denies service to site visitors. This issue is fixed in version 2.0.4.

Affected products

• Getgrav Grav: before 2.0.4 (fixed in 2.0.4)

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