The MemberPress Discord Addon by expresstechsoftware contains a reflected cross-site scripting vulnerability due to improper input neutralization during web page generation. This affects all versions up to 1.1.4. The vulnerability allows attackers to inject malicious scripts that can execute in users' browsers, potentially leading to confidentiality, integrity, and availability impacts. The CVSS 3.1 vector indicates the attack can be performed remotely over the network without privileges, requires user interaction, and results in partial confidentiality, integrity, and availability impacts. No patch or remediation information is currently available.

Successful exploitation of this reflected XSS vulnerability could allow an attacker to execute arbitrary scripts in the context of the victim's browser session. This may lead to partial disclosure of confidential information, modification of data, and disruption of service. However, no known active exploits have been reported. The impact is rated high based on the CVSS score of 7.1.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, users should exercise caution with untrusted input and consider implementing web application firewall (WAF) rules to detect and block reflected XSS attempts. Monitor vendor channels for updates and apply official fixes once released.