Kirby CMS through 5.1.4 allows an authenticated user with 'Editor' permissions to cause a persistent Denial of Service (DoS) via a malformed image upload. The application fails to properly validate the return value of the PHP getimagesize() function. When the system attempts to process this file for metadata or thumbnail generation, it triggers a fatal TypeError.
History

Thu, 26 Mar 2026 19:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
CWE-252
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 26 Mar 2026 16:45:00 +0000

Type Values Removed Values Added
Description Kirby CMS through 5.1.4 allows an authenticated user with 'Editor' permissions to cause a persistent Denial of Service (DoS) via a malformed image upload. The application fails to properly validate the return value of the PHP getimagesize() function. When the system attempts to process this file for metadata or thumbnail generation, it triggers a fatal TypeError.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-03-26T18:31:41.421Z

Reserved: 2026-03-04T00:00:00.000Z

Link: CVE-2026-29905

cve-icon Vulnrichment

Updated: 2026-03-26T18:28:53.512Z

cve-icon NVD

Status : Received

Published: 2026-03-26T17:16:34.660

Modified: 2026-03-26T19:16:59.027

Link: CVE-2026-29905

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.