CVE-2026-19573: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in worschtebrot Affiliate Super Assistent

CVE-2026-19573 is a stored cross-site scripting vulnerability in the Affiliate Super Assistent WordPress plugin by worschtebrot. The flaw exists in the 'doCommentShortcode' function, where input is not properly sanitized or escaped before being included in web pages. This allows unauthenticated attackers to inject malicious scripts that execute in the context of users visiting the injected pages. The vulnerability affects all versions up to and including 1.10.2. The CVSS 3.1 base score is 7.2, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impacts on confidentiality and integrity with a scope change.

An attacker can execute arbitrary scripts in the context of users visiting the affected pages, potentially leading to theft of sensitive information, session hijacking, or other malicious actions impacting confidentiality and integrity. There is no impact on availability. The vulnerability can be exploited remotely without authentication or user interaction.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are currently available. Until a patch is released, consider disabling or removing the plugin to prevent exploitation. Monitor vendor communications for updates on remediation.