CVE-2021-46398

Name: CVE-2021-46398
Creator: NVD / NIST
Published: 2022-02-04T16:15:07.907+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 6.66%

Last modified Jun 17, 2026

CVE-2021-46398 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A Cross-Site Request Forgery vulnerability exists in Filebrowser < 2.18.0 that allows attackers to create a backdoor user with admin privilege and get access to the filesystem via a malicious HTML webpage that is sent to the victim. An admin can run commands using the FileBrowser and hence it leads to RCE.. EPSS estimates a 6.66% chance of exploitation in the next 30 days.

Description

A Cross-Site Request Forgery vulnerability exists in Filebrowser < 2.18.0 that allows attackers to create a backdoor user with admin privilege and get access to the filesystem via a malicious HTML webpage that is sent to the victim. An admin can run commands using the FileBrowser and hence it leads to RCE.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

6.66%

93.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Filebrowser	Filebrowser	< 2.18.0

References

http://packetstormsecurity.com/files/165885/FileBrowser-2.17.2-Code-Execution-Cross-Site-Request-Forgery.htmlExploit, Third Party Advisory, VDB Entry
https://febin0x4e4a.blogspot.com/2022/01/critical-csrf-in-filebrowser.htmlExploit, Third Party Advisory
https://febin0x4e4a.wordpress.com/2022/01/19/critical-csrf-in-filebrowser/Exploit, Third Party Advisory
https://febinj.medium.com/critical-csrf-to-rce-in-filebrowser-865a3c34b8e7Exploit, Third Party Advisory
https://github.com/filebrowser/filebrowser/commit/74b7cd8e81840537a8206317344f118093153e8dPatch, Third Party Advisory
https://systemweakness.com/critical-csrf-to-rce-in-filebrowser-865a3c34b8e7Exploit, Third Party Advisory
http://packetstormsecurity.com/files/165885/FileBrowser-2.17.2-Code-Execution-Cross-Site-Request-Forgery.htmlExploit, Third Party Advisory, VDB Entry
https://febin0x4e4a.blogspot.com/2022/01/critical-csrf-in-filebrowser.htmlExploit, Third Party Advisory
https://febin0x4e4a.wordpress.com/2022/01/19/critical-csrf-in-filebrowser/Exploit, Third Party Advisory
https://febinj.medium.com/critical-csrf-to-rce-in-filebrowser-865a3c34b8e7Exploit, Third Party Advisory
https://github.com/filebrowser/filebrowser/commit/74b7cd8e81840537a8206317344f118093153e8dPatch, Third Party Advisory
https://systemweakness.com/critical-csrf-to-rce-in-filebrowser-865a3c34b8e7Exploit, Third Party Advisory

Timeline

Published: Feb 4, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46398?

How severe is CVE-2021-46398?

CVE-2021-46398 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 6.66% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46398?

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-2021-46398?

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

Scan your code now

Source: NVD / NIST