CVE-2026-42174: Getkirby Kirby

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, user avatar creation, replacement and deletion are not gated by user update permissions. This issue has been patched in versions 4.9.0 and 5.4.0.

Affected products

• Getkirby Kirby: before 4.9.0 (fixed in 4.9.0); from 5.0.0, before 5.4.0 (fixed in 5.4.0)

Published 2026-05-09. Last modified 2026-07-24.