Adobe Connect versions 12.8 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulnerability that could be abused by an attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field. A successful attacker can abuse this to achieve session takeover, increasing the confidentiality and integrity impact as high.
https://helpx.adobe.com/security/products/connect/apsb25-36.html