CVE-2026-5063

HIGH 7.2

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

CVSS Score

7.2

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	webaways
Product	nex-forms – ultimate forms plugin for wordpress
Published	May 3, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

webaways / NEX-Forms – Ultimate Forms Plugin for WordPress

0 ≤ 9.1.11

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Naoya Takahashi