CVE-2025-13624 is a reflected Cross-Site Scripting vulnerability in the Overstock Affiliate Links WordPress plugin (versions up to 1.1). It occurs due to improper neutralization of input in the $_SERVER['PHP_SELF'] parameter, which is used in web page generation without adequate sanitization or escaping. This allows unauthenticated attackers to inject malicious scripts that execute in the context of users who click on crafted links. The vulnerability has a CVSS v3.1 base score of 6.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N), indicating network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and low impact on confidentiality and integrity, with no impact on availability. There is no vendor advisory or patch information available at this time.

Successful exploitation can lead to execution of arbitrary scripts in the context of the affected website, potentially allowing attackers to steal user session data, perform actions on behalf of users, or conduct phishing attacks. The impact is limited to confidentiality and integrity with no availability impact. The vulnerability requires user interaction (clicking a crafted link) and does not require authentication.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider disabling or removing the Overstock Affiliate Links plugin or applying manual input sanitization and output escaping if feasible. Monitoring for updates from the vendor or trusted security sources is recommended.