CVE-2026-34529

File Browser is vulnerable to Stored Cross-site Scripting via crafted EPUB file

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

filebrowser

CVSS v3.1 NVD

9.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

CVSS v3.1 GITHUB

7.6 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

EPSS

0.39% chance of exploitation in the next 30 days, 32nd percentile

Published

2026-04-01

Updated

2026-04-02

Proof-of-concept exploits (1)

• advisories/GHSA-5vpr-4fgw-f69h

Security advisories

• filebrowser/filebrowser/security/advisories/GHSA-5vpr-4fgw-f69h
• filebrowser/filebrowser/releases/tag/v2.62.2

References

• CVE Record
• NVD entry