CVE-2026-61457: Getgrav Grav

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

The Grav API plugin (getgrav/grav-plugin-api) before 1.0.3 contains a file upload extension bypass in the API media controller. HandlesMediaUploads::validateFileExtension() inspects only the final file extension via pathinfo($filename, PATHINFO_EXTENSION), so a user with api.media.write permission can upload a file with a double extension such as shell.php.jpg to bypass the dangerous extensions blocklist. The web server may then execute the file as PHP, resulting in remote code execution.

Affected products

• Getgrav Grav: before 1.0.3 (fixed in 1.0.3)

Published 2026-07-15. Last modified 2026-07-15.