CVE-2026-34529 — Cross-site Scripting in Filebrowser

CWE-79 — Cross-site Scripting5 documents5 sources
Severity
9.0CRITICALNVD
CNA7.6GHSA4.8OSV4.8
EPSS
0.0%
top 89.77%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
FilebrowserGithub.com Filebrowser Filebrowser V2
Timeline
PublishedApr 1

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:HExploitability: 2.3 | Impact: 6.0

Affected Packages3 packages

▶CVEListV5filebrowser/filebrowser< 2.62.2

🔴Vulnerability Details

3
CVEList
File Browser is vulnerable to Stored Cross-site Scripting via crafted EPUB file↗2026-04-01
▶
GHSA
File Browser is vulnerable to Stored Cross-site Scripting via crafted EPUB file↗2026-03-31
▶
OSV
File Browser is vulnerable to Stored Cross-site Scripting via crafted EPUB file↗2026-03-31
▶

🕵️Threat Intelligence

1
Wiz
CVE-2026-34529 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶
CVE-2026-34529 — Cross-site Scripting in Filebrowser | cvebase