How severe is CVE-2025-13974?

Medium severity. CVSS v3 base score is 4.4 out of 10.

XSS in Themehigh Email Customizer For Woocommerce | Drag And Drop Templates Builder

CVE-2025-13974

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (22.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N.

Affected products

Themehigh Email Customizer For Woocommerce | Drag And Drop Templates Builder — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2025-13974?: CVE-2025-13974 is a medium-severity vulnerability in Themehigh Email Customizer For Woocommerce | Drag And Drop Templates Builder, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2026-01-07.
How severe is CVE-2025-13974?: Medium severity. CVSS v3 base score is 4.4 out of 10.