How severe is CVE-2025-12644?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Wpcox Nonaki – Drag And Drop Email Template Builder Newsletter Plugin For Wordpress

CVE-2025-12644

The Nonaki – Drag and Drop Email Template builder and Newsletter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'nonaki' shortcode in all versions up to, and including, 1.0.11. This is due to insufficient input sanitization and output escaping on user supplied custom field values that are retrieved and rendered by the shortcode. 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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (11.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Wpcox Nonaki – Drag And Drop Email Template Builder Newsletter Plugin For Wordpress — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2025-12644?: CVE-2025-12644 is a medium-severity vulnerability in Wpcox Nonaki – Drag And Drop Email Template Builder Newsletter Plugin For Wordpress, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-11-11.
How severe is CVE-2025-12644?: Medium severity. CVSS v3 base score is 6.4 out of 10.