Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/filebrowser/filebrowser/issues/5199
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-8c9q-7855-wf
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-8c9q-7855-wf
FAQ
What is CVE-2026-54090?
CVE-2026-54090 is a documented vulnerability. 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. /...
How severe is CVE-2026-54090?
CVSS scoring is not yet available for CVE-2026-54090. Check NVD for updates.
Is there a patch for CVE-2026-54090?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.