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Vulnerability record · CVE-2026-42137 · published 9 May 2026

CVE-2026-42137: Getkirby kirby missing authorization vulnerability

Getkirby · Kirby

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.

7.1 CVSS 4.0 High EPSS 0.40% · top 68.2% CWE-862 · Missing authorizationCWE-863 · Incorrect authorization
7.1CVSS 4.0 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
24 Jul 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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 PatchVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-42137), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.