What’s Vulnerable › Vulnerabilities

CVE-2026-34530: File Browser is vulnerable to Stored Cross-Site Scripting via text/template branding injection

• Severity: medium (CVSS 6.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-01 · updated 2026-06-17
• Weakness: CWE-79

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 SPA index page in File Browser is vulnerable to Stored Cross-Site Scripting (XSS) via admin-controlled branding fields. An admin who sets branding.name to a malicious payload injects persistent JavaScript that executes for ALL visitors, including unauthenticated users. This issue has been patched in version 2.62.2.

Affected products

• filebrowser: before 2.62.2 — fixed in 2.62.2

How to fix

Upgrade to a fixed version: filebrowser 2.62.2. Check the vendor advisory for mitigations.

References

• https://github.com/filebrowser/filebrowser/releases/tag/v2.62.2
• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-xfqj-3vmx-63wv

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