The Kadence Blocks plugin for WordPress contains a stored cross-site scripting vulnerability (CWE-79) in multiple blocks due to improper neutralization of user-supplied input during web page generation. This allows authenticated users with contributor or higher privileges to inject arbitrary JavaScript code into pages, which executes when those pages are viewed by others. The vulnerability affects all versions up to 3.2.37. The CVSS 3.1 base score is 5.4, reflecting network attack vector, low attack complexity, and limited privileges required. No patch or vendor advisory is currently available to confirm remediation status.

An attacker with contributor-level access or higher can exploit this vulnerability to inject malicious scripts into pages, potentially leading to session hijacking, defacement, or other client-side attacks when other users view the compromised content. The impact is limited to confidentiality and integrity with no availability impact. Since the attacker must be authenticated with at least contributor privileges, the risk is moderated but still significant in environments where such access is granted to multiple users.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, limit contributor-level access to trusted users only and consider disabling or restricting use of the affected blocks. Monitor for updates from stellarwp regarding patches or official mitigations.