What the vulnerability does
01Description
The SendPulse Email Marketing Newsletter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via _sp_form_code Post Meta in all versions up to, and including, 2.2.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the attacker to create a sendpulse_form post containing a benign SendPulse loader script tag alongside arbitrary HTML (e.g., an img onerror payload), which bypasses the allow-list check and executes in the browser of any user — including administrators — who previews or views a page rendering the [sendpulse-form] shortcode.
Explanation of Vulnerability in Simple Terms
02Summary
SendPulse Email Marketing Newsletter versions up to 2.2.5 contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. The vulnerability has a changed scope, meaning the impact can extend beyond the vulnerable component itself. An attacker with low-level account access can craft payloads that affect other users or site functionality.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in other users' browsers or affects site functionality.
Potential impact on your site
04Site Impact
Authenticated users with low privileges can inject scripts affecting other users' sessions, data, or site behavior.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account on the site; no user interaction required.
Key dates
06Disclosure timeline
August 1, 2026
CVE published
