CVE-2026-42137 PUBLISHED

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

Assigner: GitHub_M
Reserved: 24.04.2026 Published: 09.05.2026 Updated: 09.05.2026

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.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS Score: 7.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	getkirby
Product	kirby
Versions	Version < 4.9.0 is affected Version >= 5.0.0, < 5.4.0 is affected

References

Problem Types

CWE-862: Missing Authorization CWE
CWE-863: Incorrect Authorization CWE