CVE-2025-1406 describes a stored cross-site scripting vulnerability in the Newpost Catch WordPress plugin by s56bouya. The issue arises from improper neutralization of input during web page generation (CWE-79) specifically in the npc shortcode, allowing authenticated users with contributor or higher privileges to inject arbitrary scripts. These scripts persist in pages and execute in the context of any user viewing the page, potentially leading to information disclosure or session hijacking. The vulnerability affects all versions up to and including 1.3.19. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, required privileges at the contributor level, no user interaction, and impacts on confidentiality and integrity but not availability.

An attacker with contributor-level access or higher can inject persistent malicious scripts into pages via the npc shortcode. These scripts execute in the context of users who view the infected pages, potentially allowing theft of sensitive information or manipulation of user sessions. The vulnerability does not affect availability. 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 available, restrict contributor-level access to trusted users only and consider disabling or removing the Newpost Catch plugin if possible to prevent exploitation.