CVE-2024-6432 is a stored cross-site scripting vulnerability in the vanderwijk Content Blocks (Custom Post Widget) WordPress plugin, affecting all versions up to 3.3.5. The flaw exists due to improper neutralization of input in the 'content' parameter of the plugin's shortcode, allowing authenticated users with Contributor-level privileges or higher to inject arbitrary web scripts. These scripts execute in the context of any user who accesses the injected page, potentially leading to session hijacking or other script-based attacks. The vulnerability has a CVSS 3.1 score of 6.4, reflecting a medium severity with network attack vector, low attack complexity, and no user interaction required.

An attacker with Contributor-level or higher access can exploit this vulnerability to inject persistent malicious scripts into pages generated by the plugin. When other users view these pages, the injected scripts execute in their browsers, potentially compromising user sessions or performing unauthorized actions within the context of the affected site. The impact is limited to confidentiality and integrity with no direct availability impact.

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 removing the vulnerable plugin to prevent exploitation.