Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Filebrowser | Filebrowser | < 2.62.2 |
Related Weaknesses (CWE)
References
- https://github.com/filebrowser/filebrowser/releases/tag/v2.62.2ProductRelease Notes
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-x8jc-jvqm-pmExploitMitigationVendor Advisory
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-x8jc-jvqm-pmExploitMitigationVendor Advisory
FAQ
What is CVE-2026-34528?
CVE-2026-34528 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 appl...
How severe is CVE-2026-34528?
CVE-2026-34528 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34528?
Check the references section above for vendor advisories and patch information. Affected products include: Filebrowser Filebrowser.