What’s Vulnerable › Vulnerabilities

CVE-2026-35606: File Browser discloses text file content via /api/resources endpoint bypassing Perm.Download check

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-07 · updated 2026-06-17
• Weakness: CWE-862

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 products

• filebrowser: through 2.63.0

References

• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-67cg-cpj7-qgc9
• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-67cg-cpj7-qgc9

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