The ip_mod_dns_key_form.cgi request in GestioIP v3.5.7 is vulnerable to Stored XSS. An attacker can inject malicious code into the "TSIG Key" field, which is saved in the database and triggers XSS when viewed, enabling data exfiltration and CSRF attacks.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.