CVE-2024-11352 is a stored cross-site scripting vulnerability in the TwentyTwenty WordPress plugin by cs123. The flaw exists in the 'twentytwenty' shortcode, where user input is not properly sanitized or escaped before being output on pages. Authenticated attackers with contributor or higher privileges can exploit this to inject arbitrary JavaScript that executes in the context of users viewing the compromised pages. The vulnerability affects all versions up to and including 1.0.1. 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 access or higher can inject persistent malicious scripts into pages via the vulnerable shortcode. These scripts execute in the browsers of users who visit the infected pages, potentially leading to session hijacking, defacement, or other client-side attacks. The vulnerability does not impact availability. The scope is changed, meaning the vulnerability affects resources beyond the attacker's privileges. There are no known exploits in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict contributor-level access to trusted users only. Consider disabling or removing the TwentyTwenty plugin if feasible. Monitor official cs123 or WordPress security advisories for updates and apply patches promptly once available.