CVE-2026-54003

Fixed upstream EPSS <1%CVSS 9.1

Kirby is an open-source content management system. Prior to 4.9.4 and from 5.4.4, Kirby sites with no configured user accounts that run on publicly accessible servers behind a reverse proxy setting the Forwarded, X-Client-IP, or X-Real-IP request header could allow remote attackers to install the Panel and create the first admin user because local-IP checks trusted those headers incorrectly. This issue is fixed in versions 4.9.4 and 5.4.4.

Published 2026-07-09 · CVE record · OSV

Products: getkirby kirby

Fixed upstream