Vulnerability · Published May 9, 2026 · Assigned by GitHub_M
CVE-2026-42137Kirby: `pages.access/list` and `files.access/list` permissions are not consistently checked in the REST API and changes dialog
High 7.1
In plain English
A high-severity missing authorization in kirby from getkirby. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)7.1High
Exploit odds (30 days)0.3%top 76.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | getkirby/cms | 4.9.0 | GHSA-85x2-r8xv-ww8c |
| Packagist | getkirby/cms | 5.4.0 | GHSA-85x2-r8xv-ww8c |
Affected products (as reported)
Weakness: CWE-862, CWE-863 · 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
References
- https://github.com/getkirby/kirby/security/advisories/GHSA-85x2-r8xv-ww8c x_refsource_CONFIRM
- https://github.com/getkirby/kirby/releases/tag/4.9.0 x_refsource_MISC
- https://github.com/getkirby/kirby/releases/tag/5.4.0 x_refsource_MISC