CVE-2026-3005 is a stored cross-site scripting vulnerability in the List category posts plugin for WordPress, affecting all versions up to 0.94.0. The issue arises from improper neutralization of input in the 'catlist' shortcode, allowing authenticated users with contributor-level access or higher to inject arbitrary web scripts. These scripts execute in the context of any user viewing the injected page, potentially leading to session hijacking or other script-based attacks. The vulnerability has a CVSS 3.1 base score of 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, and partial impact on confidentiality and integrity. No patch or official remediation is currently documented.

An attacker with contributor-level or higher privileges can inject persistent malicious scripts into pages via the vulnerable shortcode. This can lead to unauthorized actions performed in the context of users who view the infected pages, potentially compromising user data confidentiality and integrity. Availability is not affected. The vulnerability requires authentication but has low attack complexity and no user interaction is needed once the malicious script is injected.

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.