CVE-2025-13974: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in themehigh Email Customizer for WooCommerce | Drag and Drop Email Templates Builder
The Email Customizer for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via email template content in all versions up to, and including, 2.6.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in email templates that will execute when customers view transactional emails. This only affects multi-site installations and installations where unfiltered_html has been disabled.
AI Analysis
Technical Summary
The Email Customizer for WooCommerce plugin suffers from a stored XSS vulnerability (CWE-79) due to improper neutralization of input during web page generation. Authenticated users with administrator privileges can inject arbitrary scripts into email templates, which execute in the context of customers viewing transactional emails. This vulnerability affects multi-site WordPress setups or installations with unfiltered_html disabled, and exists in all plugin versions up to 2.6.7. No official patch or fix information is provided in the available data.
Potential Impact
An attacker with administrator-level access can inject malicious scripts into email templates, which execute when customers open transactional emails. This could lead to limited confidentiality and integrity impacts (as per CVSS: partial loss of confidentiality and integrity), but no availability impact. The attack requires high privileges and network access, limiting exploitation scope. The vulnerability affects multi-site or restricted unfiltered_html environments only.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict administrator access to trusted users only and consider monitoring email template content for unauthorized changes. Since no patch links or vendor advisories are provided, stay alert for updates from the vendor themehigh regarding a fix.
CVE-2025-13974: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in themehigh Email Customizer for WooCommerce | Drag and Drop Email Templates Builder
Description
The Email Customizer for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via email template content in all versions up to, and including, 2.6.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in email templates that will execute when customers view transactional emails. This only affects multi-site installations and installations where unfiltered_html has been disabled.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Email Customizer for WooCommerce plugin suffers from a stored XSS vulnerability (CWE-79) due to improper neutralization of input during web page generation. Authenticated users with administrator privileges can inject arbitrary scripts into email templates, which execute in the context of customers viewing transactional emails. This vulnerability affects multi-site WordPress setups or installations with unfiltered_html disabled, and exists in all plugin versions up to 2.6.7. No official patch or fix information is provided in the available data.
Potential Impact
An attacker with administrator-level access can inject malicious scripts into email templates, which execute when customers open transactional emails. This could lead to limited confidentiality and integrity impacts (as per CVSS: partial loss of confidentiality and integrity), but no availability impact. The attack requires high privileges and network access, limiting exploitation scope. The vulnerability affects multi-site or restricted unfiltered_html environments only.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict administrator access to trusted users only and consider monitoring email template content for unauthorized changes. Since no patch links or vendor advisories are provided, stay alert for updates from the vendor themehigh regarding a fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-12-03T16:03:59.763Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 695e4c117349d0379d7d5696
Added to database: 1/7/2026, 12:05:37 PM
Last enriched: 4/9/2026, 9:44:14 AM
Last updated: 5/10/2026, 7:31:49 AM
Views: 91
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