CVE-2025-14145 is a stored cross-site scripting vulnerability in the Niche Hero | Beautifully-designed blocks in seconds WordPress plugin by djrowling. The flaw exists in the handling of the 'spacing' parameter within the nh_row shortcode, where input is not properly sanitized or escaped before being stored and rendered. This allows authenticated users with Contributor or higher privileges to inject arbitrary JavaScript that executes in the context of users viewing the compromised pages. The vulnerability affects all versions up to and including 1.0.5. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, privileges required at the contributor level, no user interaction needed, and impacts on confidentiality and integrity with scope changed.

Successful exploitation allows an authenticated user with Contributor-level access or above to inject persistent malicious scripts into pages. These scripts execute in the browsers of users viewing the affected pages, potentially leading to theft of sensitive information, session hijacking, or other actions impacting confidentiality and integrity. There is no direct impact on availability. No known exploits are currently reported in the wild.

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 Niche Hero plugin if possible. Monitor for updates from the plugin vendor or WordPress security channels for an official patch or mitigation instructions.