CVE-2026-54090 — File Browser: Command Allowlist Bypass via Shell Metacharacter Injection
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 interprete…
Published: 2026-06-25 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7