CVE-2026-44177

Kirby is an open-source content management system. In versions 5.3.0 and above but prior to 5.4.1, Kirby did not correctly validate the provided user ID, resulting in a path traversal vulnerability. Version 5.3.0 introduced a performance improvement to the Users collection that loaded user objects lazily when first needed. Users were queried by their ID, which was then used to locate the corresponding account directory under site/accounts. This affected the authentication API (accessible to unauthenticated requests), the users API (accessible only to authenticated users), and any other place that uses $users->find() to look up an individual user by a request-provided email or ID. As a result, an attacker could trigger arbitrary PHP file inclusion of files named index.php (for example, the main PHP files of plugins), the impact of which depends on the logic those files contain. It also allowed probing for the existence of arbitrary directories on the server, letting attackers fingerprint the server and site setup, including installed plugins and the content structure. This issue has been fixed in version 5.4.1.

CVSS

No CVSS.

References

Link	Resource
https://github.com/getkirby/kirby/releases/tag/5.4.1
https://github.com/getkirby/kirby/security/advisories/GHSA-9hx7-c53c-v6x8

Configurations

No configuration.

History

16 Jul 2026, 22:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-16 22:17

Updated : 2026-07-17 18:04

NVD link : CVE-2026-44177

Mitre link : CVE-2026-44177

CVE.ORG link : CVE-2026-44177

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-98

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')

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