CVE-2025-3750 is a stored cross-site scripting vulnerability in the Network Posts Extended plugin for WordPress, affecting all versions up to and including 7.7.1. The vulnerability is due to improper neutralization of input in the 'post_height' parameter, allowing authenticated users with Contributor-level privileges or higher to inject arbitrary web scripts. These scripts execute in the context of users who access the injected pages, potentially leading to information disclosure or session hijacking. The CVSS 3.1 score is 6.4 (medium severity) with attack vector network, low attack complexity, privileges required at the low level, no user interaction, and scope changed. No patch or official fix details are currently available.

An attacker with Contributor-level access or higher can exploit this vulnerability to inject malicious scripts that execute in the browsers of users viewing the affected pages. This can lead to limited confidentiality and integrity impacts, such as theft of user credentials or unauthorized actions performed on behalf of users. There is no impact on availability. No known exploits have been reported in the wild.

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 and consider applying manual input validation or output escaping as a temporary mitigation. Monitor official channels for updates from the plugin vendor regarding patches or workarounds.