CVE-2026-54090
File Browser: Command Allowlist Bypass via Shell Metacharacter Injection
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-77 CWE-184 |
| Vendor | filebrowser |
| Product | filebrowser |
| Published | Jun 25, 2026 |
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Affected Versions
filebrowser / filebrowser
< 2.33.8