CVE-2026-54090
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.
- Score
- CVSS 4.0 8.7 High
- Status
- Deferred - security-advisories@github.com
- Published
- 2026-06-25
- Last modified
- 2026-06-26
- Weaknesses
- CWE-184, CWE-77
Affected products
References
- https://github.com/filebrowser/filebrowser/issues/5199
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-8c9q-7855-wfxq
