Home/CVE/A Cross-Site Request Forgery vulnerability exists in Filebrowser < 2.18.0 that allows attackers to create a backdoor use
CVE

CVE-2021-46398

A Cross-Site Request Forgery vulnerability exists in Filebrowser < 2.18.0 that allows attackers to create a backdoor use

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.

HIGH · CVSS 8.8 EPSS 0.1035
Act now
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 7% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-352Cross-Site Request Forgery (CSRF)
▤

Affected Products & Versions

1
filebrowser< 2.18.0
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Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go github.com/filebrowser/filebrowser/v2 HIGH fixed in 2.18.0
⚠

Public Exploits & PoCs

6
webappsFileBrowser 2.17.2 - Cross Site Request Forgery (CSRF) to Remote Code Execution (RCE)2022-02-08
pocpacketstormsecurity.com · FileBrowser-2.17.2-Code-Execution-Cross-Site-Request-Forg...packetstormsecurity.com
pocfebin0x4e4a.blogspot.com · critical-csrf-in-filebrowser.htmlfebin0x4e4a.blogspot.com
pocfebin0x4e4a.wordpress.com · critical-csrf-in-filebrowserfebin0x4e4a.wordpress.com
pocfebinj.medium.com · critical-csrf-to-rce-in-filebrowser-865a3c34b8e7febinj.medium.com
pocsystemweakness.com · critical-csrf-to-rce-in-filebrowser-865a3c34b8e7systemweakness.com
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Scoring & Timeline

8.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD04 Feb 2022 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/filebrowser/filebrowser/commit/74b7cd8e81840537a8206317344f118093153e8dPatchThird Party Advisory
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