Proof Factor – Social Proof Notifications versions up to 1.0.5 suffer from a Stored Cross-site Scripting vulnerability due to improper input neutralization during web page generation. This allows an attacker with high privileges to inject malicious scripts that are stored and later executed in the context of other users who view the affected pages. The vulnerability has a CVSS 3.1 base score of 5.9, reflecting network attack vector, low attack complexity, required privileges, and user interaction. No patch or official remediation information is currently available, and no known exploits have been reported.

Successful exploitation can lead to partial compromise of confidentiality, integrity, and availability of the affected system or user data by executing malicious scripts in users' browsers. The attacker must have high privileges and rely on user interaction, which limits the ease of exploitation. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict high privilege access to trusted users only and consider applying web application firewall (WAF) rules to detect and block suspicious input patterns related to XSS. Monitor vendor channels for updates and apply patches promptly once released.