CVSS 4.0
8.7 highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NCVE-2026-54090
High (8.7). EPSS 0.4% chance of exploitation in the next 30 days. Fixed in github.com/filebrowser/filebrowser/v2 2.33.8.
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.
Severity
- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 38% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-77, CWE-184
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-8c9q-7855-wfxq | Go | github.com/filebrowser/filebrowser/v2 | <2.33.8 | 2.33.8 |
| GO-2026-5250 | Go | github.com/filebrowser/filebrowser | all versions | no fix published |
| GO-2026-5250 | Go | github.com/filebrowser/filebrowser/v2 | <2.33.8 | 2.33.8 |