What is CVE-2025-52902?

CVE-2025-52902 is a high-severity vulnerability in Filebrowser, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2025-06-26.

How severe is CVE-2025-52902?

High severity. CVSS v3 base score is 7.6 out of 10.

XSS in Filebrowser

CVE-2025-52902

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (19.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N.

Affected products

Filebrowser — versions < 2.33.7

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2025-52902?: CVE-2025-52902 is a high-severity vulnerability in Filebrowser, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2025-06-26.
How severe is CVE-2025-52902?: High severity. CVSS v3 base score is 7.6 out of 10.