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CVE-2026-54003

Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
getkirby / kirbyaffected < 4.9.4; affected >= 5.0.0, < 5.4.4

CWE

CWE-454

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.