CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2026-34528
Critical (9.8) in filebrowser filebrowser. EPSS 0.7% chance of exploitation in the next 30 days. Fixed in github.com/filebrowser/filebrowser/v2 2.62.2.
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.
Severity
- EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
- CWE
- CWE-269
- Published
- Modified
- Record from
- the NVD, synced
Affected
- filebrowser:filebrowser
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-x8jc-jvqm-pm3f | Go | github.com/filebrowser/filebrowser/v2 | <2.62.2 | 2.62.2 |
| GO-2026-5747 | Go | github.com/filebrowser/filebrowser | all versions | no fix published |
| GO-2026-5747 | Go | github.com/filebrowser/filebrowser/v2 | <2.62.2 | 2.62.2 |