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OpenAdvisories
Medium · 5.3 CVE-2026-42051 EUVD-2026-28887GHSA-x68m-c7jf-2572

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

Published May 9, 2026 · Updated May 11, 2026 · Assigned by GitHub_M

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 products

VendorProductAffectedFixed
getkirby kirby < 4.9.0, >= 5.0.0, < 5.4.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist getkirby/cms < 4.9.0 4.9.0 GHSA-x68m-c7jf-2572
Packagist getkirby/cms >= 5.0.0, < 5.4.0 5.4.0 GHSA-x68m-c7jf-2572

References