The vulnerability CVE-2025-67537 in Blair Williams ThirstyAffiliates plugin is a stored cross-site scripting (XSS) issue caused by improper input neutralization during web page generation. It affects versions up to 3.11.8 and allows an attacker with at least low privileges and user interaction to inject malicious scripts that can impact confidentiality, integrity, and availability to a limited extent. The CVSS vector indicates network attack vector, low attack complexity, privileges required, user interaction required, and scope changed, with partial impacts on confidentiality, integrity, and availability.

Successful exploitation of this stored XSS vulnerability can lead to execution of arbitrary scripts in the context of users viewing the affected pages, potentially resulting in information disclosure, session hijacking, or other client-side impacts. The CVSS score of 6.5 reflects a medium severity, with partial impact on confidentiality, integrity, and availability. There are no known exploits in the wild currently.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor for updates from Blair Williams or the ThirstyAffiliates project. Until a fix is available, consider applying input validation or output encoding workarounds if feasible, and restrict privileges of users who can submit content that might be rendered.