CVE-2021-46398: filebrowser Cross-Site Request Forgery (CSRF)
Vulnerability summary
CVE-2021-46398 is a high (CVSS 8.8) Cross-Site Request Forgery (CSRF) vulnerability in filebrowser. EPSS estimates a 6.72% chance of exploitation in the next 30 days, higher than 93.9% of scored vulnerabilities. 6 public exploits are recorded.
Timeline
- 04-02-2022PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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 metrics
3 scores · 2 sources · 2 versions- OSV · GoEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
6.72%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
+0.05 pp
From 6.66% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
6 foundExploit Reference (febin0x4e4a.blogspot.com)
Maturity: unknown
Exploit Reference (febin0x4e4a.wordpress.com)
Maturity: unknown
Exploit Reference (systemweakness.com)
Maturity: unknown
Show all 6 exploits
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
Exploit Reference (febinj.medium.com)
Maturity: unknown
FileBrowser 2.17.2 - Cross Site Request Forgery (CSRF) to Remote Code Execution (RCE)
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Filebrowser1 product
- filebrowser< 2.18.0
Github.com/filebrowser/filebrowser1 product
- v2< 2.18.0
2 vendors · 2 products
References
11 links- github.com/filebrowser/filebrowser/commit/74b7cd8e81840537a8206317344f118093153e8dX Refsource MISCWEBFIXPatchThird Party Advisory
- febin0x4e4a.blogspot.com/2022/01/critical-csrf-in-filebrowser.htmlX Refsource MISCWEBExploitThird Party Advisory
- febin0x4e4a.wordpress.com/2022/01/19/critical-csrf-in-filebrowser/X Refsource MISCExploitThird Party Advisory
- systemweakness.com/critical-csrf-to-rce-in-filebrowser-865a3c34b8e7X Refsource MISCWEBExploitThird Party Advisory
- febinj.medium.com/critical-csrf-to-rce-in-filebrowser-865a3c34b8e7X Refsource MISCWEBExploitThird Party Advisory
