CVE-2026-2390: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in codesupplyco Powerkit – Supercharge your WordPress Site

CVE-2026-2390 is a stored cross-site scripting vulnerability in the Powerkit plugin for WordPress, affecting versions up to 3.0.4. The vulnerability is due to a flawed regex-based HTML attribute parser in the 'content_process_images' function of the Lazy Load module. This allows authenticated attackers with Contributor-level privileges or above to inject arbitrary web scripts into pages, which execute upon page access by users. The CVSS 3.1 base score is 6.4, indicating a medium severity with network attack vector, low attack complexity, and no user interaction required. The impact includes partial confidentiality and integrity loss but no availability impact.

An attacker with Contributor-level or higher access can inject malicious scripts into pages via the image processing functionality. These scripts execute in the context of users who view the injected pages, potentially leading to session hijacking, data theft, or other client-side attacks. The vulnerability does not affect availability and requires authenticated access, limiting the attack surface.

No official patch or fix is currently available as per the provided data. Users should monitor the vendor's advisory for updates. Until a fix is released, restrict Contributor-level access to trusted users only and consider disabling the Lazy Load module if feasible. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.