CVE-2026-41325

8.8 HIGH
Published: April 24, 2026 Modified: April 27, 2026
View on NVD

Description

Kirby is an open-source content management system. Kirby's user permissions control which user role is allowed to perform specific actions to content models in the CMS. These permissions are defined for each role in the user blueprint (`site/blueprints/users/...`). It is also possible to customize the permissions for each target model in the model blueprints (such as in `site/blueprints/pages/...`) using the `options` feature. The permissions and options together control the authorization of user actions. Kirby provides the `pages.create`, `files.create` and `users.create` permissions (among others). These permissions can again be set in the user blueprint and/or in the blueprint of the target model via `options`. Prior to versions 4.9.0 and 5.4.0, Kirby allowed to override the `options` during the creation of pages, files and users by injecting custom dynamic blueprint configuration into the model data. The injected `options` could include `'create' => true`, which then caused an override of the permissions and options configured by the site developer in the user and model blueprints. The problem has been patched in Kirby 4.9.0 and Kirby 5.4.0. The patched versions have updated the normalization code that is used during the creation of pages, files and users to include a filter for the `blueprint` property. This prevents the injection of dynamic blueprint configuration into the creation request.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/getkirby/kirby/releases/tag/4.9.0
Source: security-advisories@github.com
Release Notes
https://github.com/getkirby/kirby/releases/tag/5.4.0
Source: security-advisories@github.com
Release Notes
https://github.com/getkirby/kirby/security/advisories/GHSA-6gqr-mx34-wh8r
Source: security-advisories@github.com
Patch Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.8 / 10.0
EPSS (Exploit Probability)
0.0%
10th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

getkirby