CVE-2026-42137

MEDIUM

Kirby: `pages.access/list` and `files.access/list` permissions are not consistently checked in the REST API and changes dialog

Title source: cna
STIX 2.1

Description

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.

References (3)

Core 3
Core References
X_Refsource_Misc x_refsource_misc
https://github.com/getkirby/kirby/releases/tag/4.9.0
X_Refsource_Misc x_refsource_misc
https://github.com/getkirby/kirby/releases/tag/5.4.0

Scores

CVSS v3 6.5
EPSS 0.0030
EPSS Percentile 21.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-862 CWE-863
Status published
Products (2)
getkirby/kirby < 4.9.0 (2 CPE variants)
getkirby/kirby >= 5.0.0, < 5.4.0
Published May 09, 2026
Tracked Since May 09, 2026