CVE-2026-54090
published 2026-06-25CVE-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…
PriorityP357high8.7CVSS 4.0
AVNACLATNPRLUINVCHVIHVAHSCNSINSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.32%
24.1th percentile
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.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| filebrowser | filebrowser | < 2.33.8 | 2.33.8 |
| github.com | filebrowser_filebrowser_v2 | >= 0 < 2.33.8 | 2.33.8 |
CVSS provenance
nvdv4.08.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
ghsa8.0HIGH
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VulDB
filebrowser File Browser up to 2.33.7 command injection (ID 5199)
vuldb·2026-06-26·CVSS 8.7
CVE-2026-54090 [HIGH] filebrowser File Browser up to 2.33.7 command injection (ID 5199)
A vulnerability was found in filebrowser File Browser up to 2.33.7 and classified as critical. Affected by this vulnerability is an unknown functionality. Such manipulation leads to command injection.
This vulnerability is referenced as CVE-2026-54090. It is possible to launch the attack remotely. No exploit is available.
It is suggested to upgrade the affected component.
GHSA
File Browser has a Command Execution Allowlist Bypass via Shell Metacharacter Injection
ghsa·2026-06-12·CVSS 8.0
CVE-2026-54090 [HIGH] CWE-77 File Browser has a Command Execution Allowlist Bypass via Shell Metacharacter Injection
File Browser has a Command Execution Allowlist Bypass via Shell Metacharacter Injection
> [!NOTE]
> **This feature has been disabled by default for all installations from v2.33.8 onwards, including for existent installations**. To exploit this vulnerability, the instance administrator must turn on a feature and ignore all the warnings about known vulnerabilities. We're publishing this new advisory to make it clear that all vulnerabilities concerning this feature are disclosed.
>
> For more information about tracking vulnerability issues related to the Command Execution features, check https://github.com/filebrowser/filebrowser/issues/5199.
## Summary
When a shell interpreter is configured (e.g. `/bin/sh -c`), the command allowlist can be bypassed through shell metacharacters. The allowl
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-06-25
Published