CVE-2026-35585

7.2 HIGH

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory

Published: 2026-04-07 · Last updated: 2026-06-09

Severity and scoring

CVSS: 7.2 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-78, CWE-88

Affected products

Vendor	Product
filebrowser	filebrowser

Description

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. From 2.0.0 until 2.33.8, the hook system in File Browser — which executes administrator-defined shell commands on file events such as upload, rename, and delete — is vulnerable to OS command injection. Variable substitution for values like $FILE and $USERNAME is performed via os.Expand without sanitization. An attacker with file write permission can craft a malicious filename containing shell metacharacters, causing the server to execute arbitrary OS commands when the hook fires. This results in Remote Code Execution (RCE). This feature has been disabled by default for all installations from v2.33.8 onwards, including for existent installations.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-35585
[Patch]https://github.com/filebrowser/filebrowser/issues/5199
[Vendor advisory]https://github.com/filebrowser/filebrowser/security/advisories/GHSA-jvpw-637p-h3pw
[Vendor advisory]https://github.com/filebrowser/filebrowser/security/advisories/GHSA-jvpw-637p-h3pw

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