Missing Authorization in Kirby - CVE-2026-54004
Published: July 20, 2026
Vulnerability identifier: #VU138442
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-54004
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to missing authorization in clean file redirects for top-level draft files when handling requests for clean file URLs. A remote attacker can request a known clean file URL to disclose sensitive information.
Only files stored in top-level drafts are affected, and exploitation requires knowledge of the full clean file URL.
Affected software
Kirby
How to mitigate CVE-2026-54004
Install security update from vendor's website.
Kirby - addressed in versions 4.9.4, 5.4.4