CVE-2026-42137

Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, `pages.access/list` and `files.access/list` permissions are not consistently checked in the Panel and REST API. This issue has been patched in versions 4.9.0 and 5.4.0.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/getkirby/kirby/releases/tag/4.9.0	Release Notes
https://github.com/getkirby/kirby/releases/tag/5.4.0	Release Notes
https://github.com/getkirby/kirby/security/advisories/GHSA-85x2-r8xv-ww8c	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:getkirby:kirby::::::::
	cpe:2.3:a:getkirby:kirby::::::::

History

18 May 2026, 13:00

Type	Values Removed	Values Added
First Time		Getkirby kirby Getkirby
CPE		cpe:2.3:a:getkirby:kirby::::::::
References	~~() https://github.com/getkirby/kirby/releases/tag/4.9.0 -~~	() https://github.com/getkirby/kirby/releases/tag/4.9.0 - Release Notes
References	~~() https://github.com/getkirby/kirby/releases/tag/5.4.0 -~~	() https://github.com/getkirby/kirby/releases/tag/5.4.0 - Release Notes
References	~~() https://github.com/getkirby/kirby/security/advisories/GHSA-85x2-r8xv-ww8c -~~	() https://github.com/getkirby/kirby/security/advisories/GHSA-85x2-r8xv-ww8c - Patch, Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.5

09 May 2026, 04:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-09 04:16

Updated : 2026-05-18 13:00

NVD link : CVE-2026-42137

Mitre link : CVE-2026-42137

CVE.ORG link : CVE-2026-42137

JSON object : View

Products Affected

getkirby

kirby

CWE

CWE-862

Missing Authorization

CWE-863

Incorrect Authorization

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