HIGH SeverityCVSS 3.17.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CVE-2026-5063

Last updated May 03, 2026 · Published May 03, 2026

Description

The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via POST parameter key names in the submit_nex_form() function in versions up to, and including, 9.1.11 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.

Affected products

1 listed

webaways:NEX-Forms – Ultimate Forms Plugin for WordPress

Mappings

CWE

CWE-79

CAPEC

None listed.

Research

Cross-Site Scripting (XSS)Covers reflected, stored, and DOM based XSS risks and why they remain high impact. Provides prevention…

Training

XSS in React, Vue and Server ComponentsCross-site scripting in modern component frameworks and how to prevent it.