What the vulnerability does
01Description
The Newsletters plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the logging functionality in all versions up to, and including, 4.9.9.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
02Summary
Contrid Newsletters versions 4.9.9.7 and earlier contain a cross-site scripting (XSS) vulnerability that allows unauthenticated attackers to inject malicious scripts. The vulnerability affects the scope beyond the vulnerable component, potentially impacting other users and site functionality. No user interaction is required for exploitation.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that executes in other users' browsers and affects site functionality.
Potential impact on your site
04Site Impact
Attackers can deface content, steal user sessions, or redirect visitors without requiring login credentials.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
March 26, 2025
CVE published
April 8, 2026
Record updated