File Execution Vulnerability in File Browser by FileBrowser
CVE-2026-34528

8.1HIGH

Key Information:

Vendor

Filebrowser

Status
Filebrowser
Vendor
CVE Published:
1 April 2026

What is CVE-2026-34528?

The File Browser file management interface exposes a significant security risk due to improper default user permissions. In versions prior to 2.62.2, the signupHandler fails to adequately restrict permissions for newly registered users. When an administrator has enabled self-registration and server-side execution with Execute set to true, unauthenticated users can self-register and inherit shell execution capabilities. This flaw permits unauthorized execution of arbitrary commands on the server. Users are strongly advised to upgrade to version 2.62.2 or later to mitigate this vulnerability.

Affected Version(s)

filebrowser < 2.62.2

References

https://github.com/filebrowser/filebrowser/security/advis...
x_refsource_CONFIRM
https://github.com/filebrowser/filebrowser/releases/tag/v...
x_refsource_MISC

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.