CVE-2026-4479 is a stored cross-site scripting vulnerability (CWE-79) in the WholeSale Products Dynamic Pricing Management WooCommerce plugin for WordPress. The flaw exists due to improper neutralization of input during web page generation, specifically insufficient sanitization and escaping of admin settings input. This allows authenticated administrators on multi-site installations or installations with unfiltered_html disabled to inject malicious scripts that execute in users' browsers when they visit the injected pages. The vulnerability affects all versions up to and including 1.2. The CVSS 3.1 base score is 4.4, reflecting medium severity with network attack vector, high attack complexity, and requiring high privileges without user interaction. No vendor patch or official remediation is currently documented.

An attacker with administrator-level access on affected WordPress multi-site installations or installations with unfiltered_html disabled can inject persistent malicious scripts into admin settings. These scripts execute in the context of users visiting the injected pages, potentially leading to information disclosure or session hijacking limited to the scope of the injected script. The impact is limited by the requirement for high privileges and the specific installation conditions.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict administrator access to trusted users only and consider monitoring for suspicious admin activity. Review and harden WordPress multi-site configurations and capabilities related to unfiltered_html. Avoid installing or using affected versions of the plugin where possible.