CVE-2026-1844 describes a stored cross-site scripting vulnerability in the PixelYourSite Pro WordPress plugin, specifically affecting all versions up to and including 12.4.0.2. The vulnerability is due to improper neutralization of input during web page generation (CWE-79) via the 'pysTrafficSource' and 'pys_landing_page' parameters. An unauthenticated attacker can inject arbitrary web scripts that execute in the context of users visiting the injected pages. 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 no availability impact.

Successful exploitation allows unauthenticated attackers to execute arbitrary scripts in the context of users visiting 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. No known exploits are reported in the wild.

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 restricting access to the vulnerable parameters if possible. Monitor vendor channels for updates and apply patches promptly once released.