Vulnerability · Published Apr 7, 2026 · Assigned by GitHub_M
CVE-2026-35606File Browser discloses text file content via /api/resources endpoint bypassing Perm.Download check
Medium 5.3
In plain English
A medium-severity missing authorization 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 29% 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 resourceGetHandler in http/resource.go returns full text file content without checking the Perm.Download permission flag. All three other content-serving endpoints (/api/raw, /api/preview, /api/subtitle) correctly verify this permission before serving content. A user with download: false can read any text file within their scope through two bypass paths. 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-2026-5167 |
| Go | github.com/filebrowser/filebrowser/v2 | 2.63.1 | GHSA-67cg-cpj7-qgc9 |
| Go | github.com/filebrowser/filebrowser/v2 | 2.63.1 | GO-2026-5167 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| filebrowser | filebrowser | < 2.63.1 |
Weakness: CWE-862 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N