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Vulnerability record · CVE-2021-46398 · published 4 February 2022

CVE-2021-46398: Filebrowser cross-site request forgery vulnerability

Filebrowser · Filebrowser

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.

8.8 CVSS 3.1 High EPSS 6.7% · top 6.3% CWE-352 · Cross-site request forgery
8.8CVSS 3.1 base score, v2 6.8
6.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References, 10 tagged exploit
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/165885/FileBrowser-2.17.2-Code-Execution-Cross-Site-Request-Forgery.html ExploitThird Party AdvisoryVDB Entry
https://febin0x4e4a.blogspot.com/2022/01/critical-csrf-in-filebrowser.html ExploitThird Party Advisory
https://febin0x4e4a.wordpress.com/2022/01/19/critical-csrf-in-filebrowser/ ExploitThird Party Advisory
https://febinj.medium.com/critical-csrf-to-rce-in-filebrowser-865a3c34b8e7 ExploitThird Party Advisory
https://github.com/filebrowser/filebrowser/commit/74b7cd8e81840537a8206317344f118093153e8d PatchThird Party Advisory
https://systemweakness.com/critical-csrf-to-rce-in-filebrowser-865a3c34b8e7 ExploitThird Party Advisory
http://packetstormsecurity.com/files/165885/FileBrowser-2.17.2-Code-Execution-Cross-Site-Request-Forgery.html ExploitThird Party AdvisoryVDB Entry
https://febin0x4e4a.blogspot.com/2022/01/critical-csrf-in-filebrowser.html ExploitThird Party Advisory
https://febin0x4e4a.wordpress.com/2022/01/19/critical-csrf-in-filebrowser/ ExploitThird Party Advisory
https://febinj.medium.com/critical-csrf-to-rce-in-filebrowser-865a3c34b8e7 ExploitThird Party Advisory
https://github.com/filebrowser/filebrowser/commit/74b7cd8e81840537a8206317344f118093153e8d PatchThird Party Advisory
https://systemweakness.com/critical-csrf-to-rce-in-filebrowser-865a3c34b8e7 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2026-32760Filebrowser improper privilege management vulnerabilityFile Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. In versions …EPSS 0.69%9.8CVE-2026-34528Filebrowser improper privilege management vulnerabilityFile Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to ver…EPSS 0.66%9.0CVE-2026-34529Filebrowser cross-site scripting vulnerabilityFile Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to ver…EPSS 0.39%9.0CVE-2023-39612Filebrowser cross-site scripting vulnerabilityA cross-site scripting (XSS) vulnerability in FileBrowser before v2.23.0 allows an authenticated attacker to escalate privileges to Administrator via…EPSS 0.88%8.8CVE-2026-35607Filebrowser improper privilege management vulnerabilityFile Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.6…EPSS 0.56%8.2CVE-2026-35604Filebrowser incorrect authorization vulnerabilityFile Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.6…EPSS 0.43%8.1CVE-2026-29188Filebrowser improper access control vulnerabilityFile Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. Pr…EPSS 0.59%8.1CVE-2026-25890Filebrowser incorrect authorization vulnerabilityFile Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. Pr…EPSS 0.55%

Source: NIST National Vulnerability Database (record CVE-2021-46398), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.