Authorization Bypass in File Browser by FileBrowser
CVE-2026-73612

8.6HIGH

Key Information:

Vendor

Filebrowser

Status
Filebrowser
Vendor
CVE Published:
13 August 2026

What is CVE-2026-73612?

File Browser prior to version 2.63.22 has a critical flaw where it does not properly enforce access rules for child elements during recursive operations like copy, rename, and delete. This loophole permits authenticated users to manipulate files which they are normally restricted from accessing by merely targeting a permitted parent directory. As a result, attackers can undermine the application's rule-based isolation mechanisms, compromising both the confidentiality and integrity of sensitive files.

Affected Version(s)

filebrowser 0 < 2.63.22

filebrowser 2.63.22

References

https://github.com/filebrowser/filebrowser/security/advis...
vendor-advisory
https://github.com/filebrowser/filebrowser/commit/72faf6d...
patch
https://www.vulncheck.com/advisories/file-browser-before-...
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

hacdias
.