Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in FileBrowser - CVE-2026-34529
Published: April 8, 2026
Vulnerability identifier: #VU125397
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-34529
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary script in a victim's browser.
The vulnerability exists due to cross-site scripting in EPUB file rendering when processing a crafted EPUB file. A remote user can upload a specially crafted EPUB file to execute arbitrary script in a victim's browser.
User interaction is required to open the crafted EPUB content.
Affected software
FileBrowser
How to mitigate CVE-2026-34529
Install security update from vendor's website.
FileBrowser - update to 2.62.2