CVE-2024-9445 is a stored cross-site scripting vulnerability in the Display Medium Posts WordPress plugin by acekyd. The issue arises from improper neutralization of input during web page generation (CWE-79) in the plugin's display_medium_posts shortcode, allowing authenticated users with contributor or higher privileges to inject arbitrary scripts. These scripts execute when any user accesses the injected page, potentially leading to information disclosure or session hijacking. The vulnerability affects all versions up to and including 5.0.1. The CVSS 3.1 base score is 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, required privileges, no user interaction, scope change, and limited confidentiality and integrity impact without availability impact.

An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable shortcode. These scripts execute in the context of users viewing the page, potentially leading to theft of user credentials, session tokens, or other sensitive information. The vulnerability impacts confidentiality and integrity but does not affect 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 removing the Display Medium Posts plugin if possible. Monitor for updates from the plugin vendor or WordPress security channels for an official patch.