CVE-2025-5085 describes a stored cross-site scripting vulnerability in the WP Nano AD plugin for WordPress affecting all versions up to and including 1.31. The issue is due to improper neutralization of input during web page generation, specifically via the 'blogrole_link' parameter. Authenticated users with administrator privileges on multi-site WordPress installations or installations with unfiltered_html disabled can inject arbitrary scripts that execute in the context of other users viewing the injected content. This vulnerability has a CVSS 3.1 base score of 5.5 (medium severity), with network attack vector, low attack complexity, high privileges required, no user interaction, scope changed, and impacts on confidentiality and integrity but not availability. No official patch or remediation information is currently available.

An attacker with administrator-level access on affected WordPress multi-site installations or installations with unfiltered_html disabled can inject persistent malicious scripts via the 'blogrole_link' parameter. These scripts execute in the browsers of users who visit the injected pages, potentially leading to unauthorized actions or data disclosure within the context of the affected site. The confidentiality and integrity of the site and user data may be compromised, but availability is not impacted.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict administrator access to trusted users only and consider disabling or limiting the use of the WP Nano AD plugin in multi-site environments or where unfiltered_html is disabled. Monitor for updates from the vendor or security advisories for a patch or official mitigation.