Vulnerability · Published Apr 7, 2026 · Assigned by GitHub_M
CVE-2026-35607File Browser: Proxy auth auto-provisioned users inherit Execute permission and Commands
High 8.1
In plain English
A high-severity privilege mismanagement in filebrowser from filebrowser. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.1, the fix in commit b6a4fb1 ("self-registered users don't get execute perms") stripped Execute permission and Commands from users created via the signup handler. The same fix was not applied to the proxy auth handler. Users auto-created on first successful proxy-auth login are granted execution capabilities from global defaults, even though the signup path was explicitly changed to prevent execution rights from being inherited by automatically provisioned accounts. This vulnerability is fixed in 2.63.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/filebrowser/filebrowser | no fix listed | GO-2026-5205 |
| Go | github.com/filebrowser/filebrowser/v2 | 2.63.1 | GHSA-7526-j432-6ppp |
| Go | github.com/filebrowser/filebrowser/v2 | 2.63.1 | GO-2026-5205 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| filebrowser | filebrowser | < 2.63.1 |
Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7526-j432-6ppp x_refsource_CONFIRM
- https://github.com/filebrowser/filebrowser/pull/5890 x_refsource_MISC