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CVE-2025-52902: File Browser has Stored Cross-Site Scripting vulnerability

7.6 CVSS

Description

File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. The Markdown preview function of File Browser prior to v2.33.7 is vulnerable to Stored Cross-Site-Scripting (XSS). Any JavaScript code that is part of a Markdown file uploaded by a user will be executed by the browser. Version 2.33.7 contains a fix for the issue.

Classification

CVE ID: CVE-2025-52902

CVSS Base Severity: HIGH

CVSS Base Score: 7.6

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

Problem Types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Affected Products

Vendor: filebrowser

Product: filebrowser

References

https://nvd.nist.gov/vuln/detail/CVE-2025-52902
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-4wx8-5gm2-2j97
https://github.com/filebrowser/filebrowser/commit/f19943a42e8e092e811dffbe9f4623dac36f1f0d

Timeline