Findings

CVE-2026-42051

Kirby is an open-source content management system.

Published May 9, 2026 · updated Jul 24, 2026 · getkirby kirby

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.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 9, 2026 · NIST NVD

    Detected

    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.

  2. Jul 24, 2026 · NIST NVD

    Updated

    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

  • cpe getkirby/kirbyversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-42051

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-42051

    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.

    nvd.nist.gov

References

CVE-2026-42051 · ZeroDay Findings