Stored Cross-Site Scripting Vulnerability in Wing FTP Server
CVE-2026-120491

5.1MEDIUM

Key Information:

Vendor

Wing Ftp Software

Status
Wing Ftp Server
Vendor
CVE Published:
2 November 2026

What is CVE-2026-120491?

Wing FTP Server prior to version 8.2.6 is vulnerable to a stored cross-site scripting (XSS) attack. This flaw allows authenticated users of the web client to send a crafted 'nowpath' parameter to 'webclient/makethumb.html', potentially injecting malicious scripts. Additionally, attackers can exploit the vulnerability to bypass the directory CDATA section in 'admin_get_lastconn.html' XML, forging a connection ID that may execute commands in the browsers of administrators during the auto-refresh of 'admin_connection_list.html'. This can lead to further exploitation through the Lua console, undermining the overall security of the affected systems.

Affected Version(s)

Wing FTP Server 0 < 8.2.6

References

https://www.wftpserver.com/serverhistory.htm
vendor-advisoryrelease-notes
https://www.vulncheck.com/advisories/wing-ftp-server-befo...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Elijah Elliott
.