CVE-2026-34528 Details
Description
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to version 2.62.2, the signupHandler in File Browser applies default user permissions via d.settings.Defaults.Apply(user), then strips only Admin. The Execute permission and Commands list from the default user template are not stripped. When an administrator has enabled signup, server-side execution, and set Execute=true in the default user template, any unauthenticated user who self-registers inherits shell execution capabilities and can run arbitrary commands on the server. This issue has been patched in version 2.62.2.
A vulnerability in File Browser prior to version 2.62.2 allows unauthenticated users to execute arbitrary commands on the server. This issue arises because the application’s signup handler improperly manages user permissions. While it removes Admin rights from the default user template, it fails to strip the Execute permission and the associated Commands list. As a result, when an administrator enables self-registration and server-side command execution, any unauthenticated user who self-registers can inherit these execution capabilities and run commands on the server.
Users should update to File Browser version 2.62.2 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 2, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/filebrowser/filebrowser/security/advisories/GHSA-x8jc-jvqm-pm3f | CISA-ADP | ExploitMitigationVendor Advisory |
| https://github.com/filebrowser/filebrowser/releases/tag/v2.62.2 | [email protected] | ProductRelease Notes |
| https://github.com/filebrowser/filebrowser/security/advisories/GHSA-x8jc-jvqm-pm3f | [email protected] | ExploitMitigationVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-269 | Improper Privilege Management | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| filebrowser filebrowser | < 2.62.2 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 6, 2026 | Initial Analysis | [email protected] |
| Apr 2, 2026 | CVE Modified | CISA-ADP |
| Apr 1, 2026 | New CVE Received | [email protected] |