CVE-2026-54090
HighCVSS 8.7Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
File Browser before version 2.33.8 allows bypassing the command allowlist using shell metacharacters. The allowlist only validates the first token of user input, but the entire raw string is passed to the shell, allowing arbitrary commands to be executed after a permitted one.
Risk Assessment
An attacker can execute arbitrary system commands on the server, potentially leading to application compromise, data theft, or further attacks on the infrastructure.
Recommendation
Immediately update File Browser to version 2.33.8 or later, which contains a fix for this vulnerability.
Other vulnerabilities in File Browser przed wersją 2.33.8
See all- CVE-2026-55667High
In File Browser before version 2.63.16, an authenticated user with only Create permission can delete files outside their scope (including other tenants' data and the application's database) by exploiting the cleanup path after a failed upload. The ScopedFs.RemoveAll method bypasses symlink protections, and the direct upload handler calls it on a user-controlled path.
- CVE-2026-54097High
File Browser before version 2.63.6 contains a vulnerability where a low-privileged authenticated user with create and delete permissions in their own isolated scope can permanently destroy share-link records belonging to other users, including the administrator. This is done by performing a legitimate DELETE operation on a file whose logical path is a byte-prefix of another user's stored share.Link.Path.
- CVE-2026-54092Medium
In File Browser before version 2.63.6, the maximum password length is not checked, allowing an arbitrarily long password to be sent to the login API. This causes a spike in CPU and memory usage, leading to container crashes and potentially disrupting the Docker daemon.
Original NVD description (English source)
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.