What is CVE-2026-13040?

CVE-2026-13040 is a high-severity vulnerability in Webaways Nex-Forms – Ultimate Forms Plugin For WordPress, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-07-03.

How severe is CVE-2026-13040?

High severity. CVSS v3 base score is 7.2 out of 10.

XSS in Webaways Nex-Forms – Ultimate Forms Plugin For WordPress

CVE-2026-13040

The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'real_val__' parameter in all versions up to, and including, 9.2.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The submission endpoint is registered via wp_ajax_nopriv_submit_nex_form with no nonce verification, making it fully accessible to unauthenticated attackers without any CSRF token.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (22.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

Webaways Nex-forms – Ultimate Forms Plugin For Wordpress — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-13040?: CVE-2026-13040 is a high-severity vulnerability in Webaways Nex-Forms – Ultimate Forms Plugin For WordPress, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-07-03.
How severe is CVE-2026-13040?: High severity. CVSS v3 base score is 7.2 out of 10.