Kirby CMS 5.3.0-5.4.0 - Path Traversal

Kirby CMS versions 5.3.0 through 5.4.0 are vulnerable to a path traversal vulnerability via the /api/auth/login endpoint. An unauthenticated attacker may supply a specially crafted email value in the request body containing traversal sequences such as "../..", which the application concatenates...

exploit-CVE-2023-38490

Kirby XML External Entity XXE - CVE-2023-38490 exploit Kirby 3.9.6 XML External Entity Exploit for CVE-2023-38490 / GHSA-q386-w6fg-gmgp. Exploitation demonstration Build and run the vulnerable demo app: cd docker docker buildx build -t kirby-starterkit-3.9.5 . docker run -d --rm -p...

Kirby CMS 5.5.3 Dynamic Field Option Authorization Bypass

Kirby CMS versions 4.9.0 through 4.9.5 and 5.5.0 through 5.5.3 contain an authorization bypass in query-backed Panel field options that may disclose metadata for restricted models to a limited authenticated user. Included proof of concept uses synthetic in-memory content...

Exploit for CVE-2026-108924

CVE-2026-108924 — Kirby dynamic field-option authorization byp...

CVE-2026-108924 getkirby Kirby Dynamic Option Generation OptionsQuery.php resolve authorization

A vulnerability was identified in getkirby Kirby up to 4.9.5/5.5.3. Affected by this issue is the function OptionsQuery::resolve of the file src/Option/OptionsQuery.php of the component Dynamic Option Generation. The manipulation leads to authorization bypass. The attack is possible to be carried...

CVE-2026-108924 getkirby Kirby Dynamic Option Generation OptionsQuery.php resolve authorization

A vulnerability was identified in getkirby Kirby up to 4.9.5/5.5.3. Affected by this issue is the function OptionsQuery::resolve of the file src/Option/OptionsQuery.php of the component Dynamic Option Generation. The manipulation leads to authorization bypass. The attack is possible to be carried...

CVE-2026-108924

A vulnerability was identified in getkirby Kirby up to 4.9.5/5.5.3. Affected by this issue is the function OptionsQuery::resolve of the file src/Option/OptionsQuery.php of the component Dynamic Option Generation. The manipulation leads to authorization bypass. The attack is possible to be carried...

EUVD-2026-68811

Kirby: Access to image files outside of the site root via path traversal in the media handling...

GHSA-6J4C-MGQR-QV76 Kirby: Access to image files outside of the site root via path traversal in the media handling

TL;DR This vulnerability affects all Kirby sites that are deployed in a way that their index root on the server is next to a second directory that is read-accessible to PHP and shares the same name prefix such as the site with the index root /var/www/site being next to /var/www/site2. It was...

Kirby: Access to image files outside of the site root via path traversal in the media handling

TL;DR This vulnerability affects all Kirby sites that are deployed in a way that their index root on the server is next to a second directory that is read-accessible to PHP and shares the same name prefix such as the site with the index root /var/www/site being next to /var/www/site2. It was...

GHSA-RF2P-VH74-7VVH Kirby: System path exposure from error messages in the REST API

TL;DR This vulnerability affects all Kirby sites that have not disabled the REST API with the 'api' = false option. It was possible to trigger a PHP error in the API backend that would expose the full filesystem path of the Kirby installation on the server. This could be used to guess the default...

Kirby: System path exposure from error messages in the REST API

TL;DR This vulnerability affects all Kirby sites that have not disabled the REST API with the 'api' = false option. It was possible to trigger a PHP error in the API backend that would expose the full filesystem path of the Kirby installation on the server. This could be used to guess the default...

EUVD-2026-54577

Kirby: System path exposure from error messages in the REST API...

Kirby: File upload permissions are not checked during processing of chunk data

TL;DR This vulnerability affects all Kirby sites where users of a particular role have access to the REST API access.panel permission is enabled but no permission to upload any kind of file files.create, files.replace and user/users.update permissions are all disabled. It was possible to fill up...

GHSA-67MX-6WF2-92XP Kirby: File upload permissions are not checked during processing of chunk data

TL;DR This vulnerability affects all Kirby sites where users of a particular role have access to the REST API access.panel permission is enabled but no permission to upload any kind of file files.create, files.replace and user/users.update permissions are all disabled. It was possible to fill up...

Kirby: Access to image files and limited access to JSON files outside of the site root via path traversal in the media handling

TL;DR This vulnerability affects all Kirby sites that are deployed to a server that allows requests for URLs with encoded slashes %2f, such as nginx, PHP's built-in server or Apache setups that have the option AllowEncodedSlashes enabled. It was possible to create and access thumbnails from media...

GHSA-9VX2-J98C-P72W Kirby: Access to image files and limited access to JSON files outside of the site root via path traversal in the media handling

TL;DR This vulnerability affects all Kirby sites that are deployed to a server that allows requests for URLs with encoded slashes %2f, such as nginx, PHP's built-in server or Apache setups that have the option AllowEncodedSlashes enabled. It was possible to create and access thumbnails from media...

CVE-2026-75592

Kirby is an open-source content management system. Prior to 4.9.5 and 5.5.2, depending on the release line, Kirby's media handler used incomplete filesystem containment checks in src/Filesystem/Dir.php and src/Filesystem/F.php through Kirby\Filesystem\Dir::realpath and Kirby\Filesystem\F::realpat...

CVE-2026-75594

Kirby is an open-source content management system. Prior to 4.9.5 and 5.5.2, depending on the release line, Kirby's media handler in src/Cms/Media.php allowed Kirby\Cms\Media::thumb to append a path-bearing filename to a validated parent media directory. On nginx, PHP's built-in server, or Apache...

CVE-2026-71415

Kirby is an open-source content management system. From 5.0.0 until 5.5.2, Kirby's REST API chunk upload handler in src/Api/Upload.php did not run the relevant upload authorization preflight in Kirby\Api\Upload::process before Kirby\Api\Upload::processChunk persisted chunk data. An authenticated...