CVE-2025-31493

Kirby is an open-source content management system. A vulnerability in versions prior to 3.9.8.3, 3.10.1.2, and 4.7.1 affects all Kirby sites that use the collection() helper or $kirby->collection() method with a dynamic collection name (such as a collection name that depends on request or user data). Sites that only use fixed calls to the collection() helper/$kirby->collection() method (i.e. calls with a simple string for the collection name) are not affected. A missing path traversal check allowed attackers to navigate and access all files on the server that were accessible to the PHP process, including files outside of the collections root or even outside of the Kirby installation. PHP code within such files was executed. Such attacks first require an attack vector in the site code that is caused by dynamic collection names, such as collection('tags-' . get('tags')). It generally also requires knowledge of the site structure and the server's file system by the attacker, a