CVE-2026-54088

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.6, the Hook Authentication feature in File Browser allows administrators to delegate login verification to an external shell command. User-supplied credentials (username and password) are interpolated into this command string using os.Expand without sanitization. An unauthenticated remote attacker can inject shell metacharacters in the username or password field at the login screen, causing the server to execute arbitrary OS commands before any authentication takes place. This is a critical pre-authentication RCE. This vulnerability is fixed in 2.63.6.

CVSS

No CVSS.

References

Link	Resource
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-m93h-4hw7-5qcm
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-m93h-4hw7-5qcm

Configurations

No configuration.

History

25 Jun 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-25 19:16

Updated : 2026-06-25 19:58

NVD link : CVE-2026-54088

Mitre link : CVE-2026-54088

CVE.ORG link : CVE-2026-54088

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CWE-88

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

CWE-306

Missing Authentication for Critical Function

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