CVE-2026-44403
High
Description
Wing FTP Server before 8.1.3 contains an authenticated remote code execution vulnerability in the session serialization mechanism that allows authenticated administrators to inject arbitrary Lua code through the domain admin mydirectory field. Attackers can exploit unsafe serialization of session values into Lua source code without proper escaping of closing delimiters, causing the injected code to be executed when the poisoned session is loaded via loadfile().
SeverityHigh
CVSS7.2
Exploit probability—
ProductWftpserver Wing Ftp Server
PublishedMay 12, 2026
First seenMay 12, 2026
Weakness typeCWE-94Code injection
How to fix
Update
- wftpserver wing_ftp_server8.1.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| wftpserver wing_ftp_server | v < 8.1.3 | 8.1.3 |
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