CVE-2021-37794

Name: CVE-2021-37794
Creator: NVD / NIST
Published: 2021-08-31T18:15:08.317+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2021-37794 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A stored cross-site scripting (XSS) vulnerability exists in FileBrowser < v2.16.0 that allows an authenticated user authorized to upload a malicious .svg file which acts as a stored XSS payload. If this stored XSS payload is triggered by an administrator it will trigger malicious OS commands on the server running the FileBrowser instance.. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

Description

A stored cross-site scripting (XSS) vulnerability exists in FileBrowser < v2.16.0 that allows an authenticated user authorized to upload a malicious .svg file which acts as a stored XSS payload. If this stored XSS payload is triggered by an administrator it will trigger malicious OS commands on the server running the FileBrowser instance.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.78%

51.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Filebrowser Project	Filebrowser	< 2.16.0

References

https://gist.github.com/omriinbar/1e28649f31d795b0e9b7698a9d255b5cThird Party Advisory
https://github.com/filebrowser/filebrowserProduct, Third Party Advisory
https://github.com/filebrowser/filebrowser/commit/201329abce4e92ae9071b9ded81e267aae159fbdPatch, Third Party Advisory
https://gist.github.com/omriinbar/1e28649f31d795b0e9b7698a9d255b5cThird Party Advisory
https://github.com/filebrowser/filebrowserProduct, Third Party Advisory
https://github.com/filebrowser/filebrowser/commit/201329abce4e92ae9071b9ded81e267aae159fbdPatch, Third Party Advisory

Timeline

Published: Aug 31, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37794?

How severe is CVE-2021-37794?

CVE-2021-37794 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37794?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-37794?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST