Cross-site scripting in Serv-U FTP Server - CVE-2026-28315
Published: July 27, 2026
Vulnerability identifier: #VU139622
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-28315
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to hijack an administrator session or disclose sensitive information.
The vulnerability exists due to cross-site scripting in Serv-U when processing stored content. A remote privileged user can inject a crafted script to hijack an administrator session or disclose sensitive information.
User interaction is required for an administrator to view the stored malicious content.
Affected software
Serv-U FTP Server
How to mitigate CVE-2026-28315
Install security update from vendor's website.
Serv-U FTP Server - update to 2026.3