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CVE-2026-34529

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

Published: Apr 1, 2026Updated: Apr 6, 2026 Sources: CVE List NVDCWE-79
NVD MITRE
7.6CVSSHIGH
EPSS Score
0.3%
Top 76.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Breakdown

AV:NAC:LPR:LUI:RS:CC:HI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

filebrowserfilebrowser
On-prem
Web & CMS Plugins / site-builder
filebrowseross-projectWeb & CMS Pluginsaka filebrowser

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/filebrowser/filebrowser/security/advisories/GHSA-5vpr-4fgw-f69h
github.com
https://github.com/filebrowser/filebrowser/releases/tag/v2.62.2
github.com

Timeline

Published
Apr 1, 2026
Last Updated
Apr 6, 2026

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