CVE-2021-46398 Cross-Site Request Forgery in Filebrowser

What is CVE-2021-46398?

CVE-2021-46398 is a high-severity vulnerability in n/a, published on 4 Feb 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official 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.

Weakness: CWE-352

Which versions are affected by CVE-2021-46398?

3 open source packages ship an affected version, including github.com/filebrowser/filebrowser/v2. It affects 1 product.

Products include Filebrowser Filebrowser.

How do I fix CVE-2021-46398?

Upgrade github.com/filebrowser/filebrowser/v2 to 2.18.0 or later.

Is CVE-2021-46398 being exploited?

There is no known exploitation of CVE-2021-46398 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry and 2 proofs of concept on GitHub.

Other vulnerabilities in n/a

• CVE-2026-32760 File Browser Self Registration Grants Any User Admin Access When Default Permissions Include Admin Critical 10.0
• CVE-2026-29188 File Browser: TUS Delete Endpoint Bypasses Delete Permission Check Critical 9.1
• CVE-2023-39612 Cross-site scripting in n/a Critical 9.0
• CVE-2026-30934 FileBrowser Quantum: Stored XSS in public share page via unsanitized share metadata (text/template misuse) High 8.9
• CVE-2026-35604 File Browser share links remain accessible after Share/Download permissions are revoked High 8.2

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-72wf-hwcq-65h9, GO-2022-0563.