The BetterDocs – Knowledge Base Docs & FAQ Solution plugin for Elementor & Block Editor in WordPress versions up to 3.4.2 contains a stored cross-site scripting vulnerability (CWE-79) due to improper neutralization of input during web page generation. Specifically, the plugin fails to properly sanitize and escape user-supplied attributes in its shortcodes. This flaw enables authenticated attackers with contributor-level privileges or higher to inject arbitrary JavaScript code that executes in the context of users visiting the compromised pages. The vulnerability is network exploitable with low attack complexity and does not require user interaction beyond visiting the injected page. The CVSS 3.1 base score is 6.4, reflecting limited confidentiality and integrity impact but no availability impact.

An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via shortcode attributes. These scripts execute in the browsers of users who view the compromised pages, potentially leading to session hijacking, privilege escalation, or other client-side attacks. The vulnerability affects confidentiality and integrity but does not impact availability. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or limiting use of the affected plugin's shortcode functionality. Monitor vendor channels for updates and apply patches promptly once released.