CVE-2026-64850: Getgrav Grav

High severity, CVSS 8.7. EPSS: 0.5% chance of exploitation in the next 30 days.

Grav is a file-based Web platform. Prior to 2.0.7, Grav Blueprint::dynamicData() in system/src/Grav/Common/Data/Blueprint.php sends an editor-controlled Class::method provider and arguments to call_user_func_array() without rejecting dangerous callback parameters. An account with admin.pages or api.pages.write can use Grav\Common\Utils::arrayFilterRecursive() as a trampoline with system as the callback, place a command in page frontmatter, and execute that command as the web server user when the page is viewed. This issue is fixed in version 2.0.7.

Affected products

• Getgrav Grav: before 2.0.7 (fixed in 2.0.7)

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