1. Home
  2. CVE Database
  3. CVE-2026-29905
MEDIUM · 6.5

CVE-2026-29905

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 th...

Vulnerability 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.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
GetkirbyKirby<= 5.1.4

Related Weaknesses (CWE)

CWE-20CWE-252

References

FAQ

What is CVE-2026-29905?

CVE-2026-29905 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 th...

How severe is CVE-2026-29905?

CVE-2026-29905 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-29905?

Check the references section above for vendor advisories and patch information. Affected products include: Getkirby Kirby.