Medium severityGHSA Advisory· Published May 9, 2026· Updated May 12, 2026

CVE-2026-42051

Description

Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, the system API endpoint leaks license data and installed version to authenticated users. This issue has been patched in versions 4.9.0 and 5.4.0.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
getkirby/cmsPackagist	< 4.9.0	4.9.0
getkirby/cmsPackagist	>= 5.0.0, < 5.4.0	5.4.0

Affected products

Getkirby/KirbyGHSA
Range: >= 5.0.0, <= 5.3.3

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

github.com/advisories/GHSA-x68m-c7jf-2572ghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-42051ghsaADVISORY
github.com/getkirby/kirby/releases/tag/4.9.0nvdWEB
github.com/getkirby/kirby/releases/tag/5.4.0nvdWEB
github.com/getkirby/kirby/security/advisories/GHSA-x68m-c7jf-2572nvdWEB

News mentions

No linked articles in our index yet.

cvss	0.260
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000