The Ajax Load More – Infinite Scroll, Load More, & Lazy Load WordPress plugin suffers from a stored cross-site scripting vulnerability (CWE-79) due to inadequate sanitization and escaping of input passed through the ajax_load_more shortcode. This flaw allows authenticated users with contributor or higher permissions to inject arbitrary JavaScript code that is stored and executed in the context of any user viewing the compromised page. The vulnerability affects all versions up to 7.1.1. 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. No patch or official fix information is currently available.

An attacker with contributor-level access can inject persistent malicious scripts into pages using the ajax_load_more shortcode. This can lead to unauthorized actions performed in the context of other users, potentially exposing sensitive information or enabling further attacks. The impact affects confidentiality and integrity but does not affect availability. There are no known active exploits reported 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 permissions to trusted users only and consider disabling or limiting use of the ajax_load_more shortcode. Monitor for updates from the plugin vendor and apply patches promptly once available.