CVE-2021-46398

Cross-Site Request Forgery in Filebrowser

8.8 HighPublic exploitFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

6.72%Up 5.8 points since Feb 5, 2022

What each source reports

NVD Score used 8.8

Record: CVE-2021-46398
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-352
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-46398
Updated: 2026-11-02

EUVDEUVD-2022-0876 No score

Record: EUVD-2022-0876
Updated: 2026-11-03

GitHub AdvisoriesGHSA-72wf-hwcq-65h9 8.8

Cross-Site Request Forgery in Filebrowser

A Cross-Site Request Forgery (CSRF) 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.

Record: GHSA-72wf-hwcq-65h9
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-352
Updated: 2026-11-02

OSV 8.8

Record: CVE-2021-46398
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-72wf-hwcq-65h9 8.8

Cross-Site Request Forgery in Filebrowser

Record: GHSA-72wf-hwcq-65h9
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-352
Updated: 2026-11-02

OSVGO-2022-0563 No score

Cross-site request forgery in github.com/filebrowser/filebrowser/v2

A Cross-Site Request Forgery vulnerability exists in Filebrowser 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.

Record: GO-2022-0563
Updated: 2026-11-02

Affected products

filebrowser

Affected packages

Affected packages
Package	Affected	Fixed
`github.com/filebrowser/filebrowser/v2` Go	before 2.18.0	2.18.0

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	FileBrowser 2.17.2 - Cross Site Request Forgery (CSRF) to Remote Code Execution (RCE)	2022-02-08
PoC in GitHub	LalieA/CVE-2021-46398	2023-01-03
PoC in GitHub	febinrev/CVE-2021-46398_Chamilo-LMS-RCE	2022-03-22

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-46398 is a high vulnerability (CVSS 8.8) in Filebrowser, published February 4, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 6.72%, the 93rd percentile. Fixed in github.com/filebrowser/filebrowser/v2 2.18.0.

References

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