What the vulnerability does
01Description
The AJS Footnotes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'note_list_class' and 'popup_display_effect_in' parameters in all versions up to, and including, 1.0 due to missing authorization and nonce verification on settings save, as well as insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to update plugin settings and inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
02Summary
AJS Footnotes versions 1.0 and earlier contain a cross-site scripting (XSS) vulnerability that allows unauthenticated attackers to inject malicious scripts into the site. The vulnerability does not require user interaction and can affect other users or components on the site. Site administrators should update to a version newer than 1.0 as soon as a patch becomes available.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that executes in visitors' browsers and affects other site users or components.
Potential impact on your site
04Site Impact
Visitors' browsers could execute attacker-controlled scripts, potentially stealing session tokens, redirecting users, or defacing content.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
January 14, 2026
CVE published
April 8, 2026
Record updated
