CVE-2026-54090 Details
Description
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.33.8, when a shell interpreter is configured (e.g. /bin/sh -c), the command allowlist can be bypassed through shell metacharacters. The allowlist validates only the first token of user input, but the entire raw string is handed to the shell — semicolons, pipes, backticks, and $() all work to chain arbitrary commands after a permitted one. This vulnerability is fixed in 2.33.8.
A command execution vulnerability has been identified in File Browser versions prior to 2.33.8. When a shell interpreter is set, the command allowlist can be bypassed using shell metacharacters. The allowlist only validates the first token of user input, while the entire raw string is passed to the shell. This allows for chaining arbitrary commands after a permitted one, using semicolons, pipes, backticks, or command substitution. The vulnerability is present in the 'runner/parser.go' and 'http/commands.go' files.
This vulnerability has been fixed in version 2.33.8. Users should update to this version or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 25, 2026CISA-ADP
Assessed Jun 26, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/filebrowser/filebrowser/security/advisories/GHSA-8c9q-7855-wfxq | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/filebrowser/filebrowser/issues/5199 | [email protected] | Issue TrackingVendor |
| https://github.com/filebrowser/filebrowser/security/advisories/GHSA-8c9q-7855-wfxq | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-184 | Incomplete List of Disallowed Inputs | [email protected] |
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| File Browser | >= 2, < 2.33.8 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 26, 2026 | CVE Modified | CISA-ADP |
| Jun 25, 2026 | New CVE Received | [email protected] |