What’s Vulnerable › Vulnerabilities

CVE-2026-34529: File Browser is vulnerable to Stored Cross-site Scripting via crafted EPUB file

• Severity: critical (CVSS 9.0 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: 2026-04-01 · 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 EPUB preview function in File Browser is vulnerable to Stored Cross-Site Scripting (XSS). JavaScript embedded in a crafted EPUB file executes in the victim's browser when they preview the file. 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-5vpr-4fgw-f69h

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