CVE-2026-13362
Received Received - Intake

Stored XSS in SendPulse Email Marketing Newsletter WordPress Plugin

Publication date: 2026-08-01

Last updated on: 2026-08-01

Assigner: Wordfence

Description
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.

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Meta Information

Published
2026-08-01
Last Modified
2026-08-01
Generated
2026-08-01
AI Q&A
2026-08-01
EPSS Evaluated
N/A
NVD
CVE-2026-13362
EUVD
EUVD-2026-51688

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
sendpulse email_marketing_newsletter_plugin to 2.2.5 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a Stored Cross-Site Scripting (XSS) vulnerability in the SendPulse Email Marketing Newsletter plugin for WordPress. It allows authenticated attackers with contributor-level access or higher to inject malicious scripts into web pages via the _sp_form_code Post Meta field. The flaw exists due to insufficient input sanitization and output escaping.

Detection Guidance

Check WordPress sites for the SendPulse Email Marketing Newsletter plugin versions up to 2.2.5. Look for sendpulse_form posts with malicious scripts in the _sp_form_code meta field. Review pages using the [sendpulse-form] shortcode for unexpected HTML or JavaScript execution.

Impact Analysis

An attacker could inject malicious scripts that execute when users view or preview pages with the [sendpulse-form] shortcode. This could lead to unauthorized actions, data theft, or session hijacking for any user, including administrators, who access the compromised page.

Compliance Impact

This vulnerability could lead to unauthorized access to user data, violating GDPR's data protection requirements and HIPAA's security rules for protected health information. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Update the SendPulse plugin to the latest version beyond 2.2.5. Remove any untrusted sendpulse_form posts or sanitize their content. Restrict contributor-level access to prevent unauthorized post creation.

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