CVE-2026-42051

Kirby: System API endpoint leaks license data and installed version to authenticated users

CVSS 5.3 MEDIUMEPSS 0.2%CWE-862

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.

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

Affected products

getkirby · kirby

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References

https://github.com/getkirby/kirby/releases/tag/4.9.0 https://github.com/getkirby/kirby/releases/tag/5.4.0 https://github.com/getkirby/kirby/security/advisories/GHSA-x68m-c7jf-2572