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CVE-2026-34529

CRITICAL CVSS 3.1: 9.0 EPSS 0.03%
Updated Apr 06, 2026
Filebrowser
Parameter Value
CVSS 9.0 (CRITICAL)
Affected Versions before 2.62.2
Fixed In 2.62.2
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor Filebrowser
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Filebrowser Filebrowser
cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*
2.62.2