What’s Vulnerable › Vulnerabilities

CVE-2026-5063: NEX-Forms <= 9.1.11 - Unauthenticated Stored Cross-Site Scripting via POST Parameter Key Names

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-03 · updated 2026-06-17
• Weakness: CWE-79

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

• webaways NEX-Forms – Ultimate Forms Plugin for WordPress: through 9.1.11

References

• https://plugins.trac.wordpress.org/changeset/3513524/nex-forms-express-wp-form-builder
• https://www.wordfence.com/threat-intel/vulnerabilities/id/9bac82ee-55bf-4381-b441-115a675e4834?source=cve

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