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, although it can be possible to find vulnerable setups through automated methods such as fuzzing. In a vulnerable setup, this could cause damage to the confidentiality and integrity of the server. The problem has been patched in Kirby 3.9.8.3, Kirby 3.10.1.2, and Kirby 4.7.1. In all of the mentioned releases, the maintainers of Kirby have added a check for the collection path that ensures that the resulting path is contained within the configured collections root. Collection paths that point outside of the collections root will not be loaded.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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, although it can be possible to find
    vulnerable setups through automated methods such as fuzzing. In a vulnerable setup, this could cause
    damage to the confidentiality and integrity of the server. The problem has been patched in Kirby 3.9.8.3,
    Kirby 3.10.1.2, and Kirby 4.7.1. In all of the mentioned releases, the maintainers of Kirby have added a
    check for the collection path that ensures that the resulting path is contained within the configured
    collections root. Collection paths that point outside of the collections root will not be loaded.
    (CVE-2025-31493)

ID	Name	Product	Family	Type	Severity
434754	SCA: security update for getkirby/cms (GHSA-x275-h9j4-7p4h)	Tenable Cloud Security	SCA Checks	Local	medium
434754	SCA: security update for getkirby/cms (GHSA-x275-h9j4-7p4h)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium

Detections

Analytics

CVE-2025-31493

medium

Tenable Plugins

medium

medium