CVE-2026-35585
File Browser has a Command Injection via Hook Runner
Description
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. From 2.0.0 through 2.63.1, 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.
INFO
Published Date :
April 7, 2026, 5:16 p.m.
Last Modified :
April 16, 2026, 6:44 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update File Browser to a version later than 2.63.1.
- Ensure the hook system is disabled by default.
- Review and sanitize hook configurations.
Public PoC/Exploit Available at Github
CVE-2026-35585 has a 3 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-35585.
| URL | Resource |
|---|---|
| https://github.com/filebrowser/filebrowser/issues/5199 | Patch |
| https://github.com/filebrowser/filebrowser/security/advisories/GHSA-jvpw-637p-h3pw | Exploit Vendor Advisory |
| https://github.com/filebrowser/filebrowser/security/advisories/GHSA-jvpw-637p-h3pw | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-35585 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-35585
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-35585 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-35585 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 16, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-78 Added CPE Configuration OR *cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:* versions from (including) 2.0.0 up to (including) 2.63.1 Added Reference Type GitHub, Inc.: https://github.com/filebrowser/filebrowser/issues/5199 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/filebrowser/filebrowser/security/advisories/GHSA-jvpw-637p-h3pw Types: Exploit, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/filebrowser/filebrowser/security/advisories/GHSA-jvpw-637p-h3pw Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 08, 2026
Action Type Old Value New Value Added Reference https://github.com/filebrowser/filebrowser/security/advisories/GHSA-jvpw-637p-h3pw -
New CVE Received by [email protected]
Apr. 07, 2026
Action Type Old Value New Value Added Description File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. From 2.0.0 through 2.63.1, 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:H/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 Added CWE CWE-78 Added CWE CWE-88 Added Reference https://github.com/filebrowser/filebrowser/issues/5199 Added Reference https://github.com/filebrowser/filebrowser/security/advisories/GHSA-jvpw-637p-h3pw