CVE-2026-42051

MEDIUM CVSS 4.0: 5.3 EPSS 0.19%
Updated Jul 25, 2026
Getkirby
Parameter Value
CVSS 5.3 (MEDIUM)
Affected Versions 5.0.0 — 5.4.0
Fixed In 4.9.0
Type CWE-862 (Missing Authorization)
Vendor Getkirby
Public PoC No

Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, the system API endpoint leaks license data and installed version to authenticated users. This issue has been patched in versions 4.9.0 and 5.4.0.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Getkirby Kirby
cpe:2.3:a:getkirby:kirby:*:*:*:*:*:*:*:*
4.9.0
Getkirby Kirby
cpe:2.3:a:getkirby:kirby:*:*:*:*:*:*:*:*
5.0.0 5.4.0