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NVD Vulnerability Details :
CVE-2026-13040
Received
More InfoOfficial Page
Source-security@wordfence.com
View Known Exploited Vulnerability (KEV) details
Published At-03 Jul, 2026 | 06:16
Updated At-03 Jul, 2026 | 06:16

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.17.2HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Type: Primary
Version: 3.1
Base score: 7.2
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-79Primarysecurity@wordfence.com
CWE ID: CWE-79
Type: Primary
Source: security@wordfence.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/includes/classes/class.functions.php#L2461security@wordfence.com
N/A
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L2660security@wordfence.com
N/A
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L467security@wordfence.com
N/A
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L4870security@wordfence.com
N/A
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L4896security@wordfence.com
N/A
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L5323security@wordfence.com
N/A
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/includes/classes/class.functions.php#L2461security@wordfence.com
N/A
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L2660security@wordfence.com
N/A
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L467security@wordfence.com
N/A
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L4870security@wordfence.com
N/A
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L4896security@wordfence.com
N/A
https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L5323security@wordfence.com
N/A
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3584399%40nex-forms-express-wp-form-builder&new=3584399%40nex-forms-express-wp-form-builder&sfp_email=&sfph_mail=security@wordfence.com
N/A
https://www.wordfence.com/threat-intel/vulnerabilities/id/49dc267a-48cf-487f-bedc-fd892666e9a0?source=cvesecurity@wordfence.com
N/A
Hyperlink: https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/includes/classes/class.functions.php#L2461
Source: security@wordfence.com
Resource: N/A
Hyperlink: https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L2660
Source: security@wordfence.com
Resource: N/A
Hyperlink: https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L467
Source: security@wordfence.com
Resource: N/A
Hyperlink: https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L4870
Source: security@wordfence.com
Resource: N/A
Hyperlink: https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L4896
Source: security@wordfence.com
Resource: N/A
Hyperlink: https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.1.11/main.php#L5323
Source: security@wordfence.com
Resource: N/A
Hyperlink: https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/includes/classes/class.functions.php#L2461
Source: security@wordfence.com
Resource: N/A
Hyperlink: https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L2660
Source: security@wordfence.com
Resource: N/A
Hyperlink: https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L467
Source: security@wordfence.com
Resource: N/A
Hyperlink: https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L4870
Source: security@wordfence.com
Resource: N/A
Hyperlink: https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L4896
Source: security@wordfence.com
Resource: N/A
Hyperlink: https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.2/main.php#L5323
Source: security@wordfence.com
Resource: N/A
Hyperlink: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3584399%40nex-forms-express-wp-form-builder&new=3584399%40nex-forms-express-wp-form-builder&sfp_email=&sfph_mail=
Source: security@wordfence.com
Resource: N/A
Hyperlink: https://www.wordfence.com/threat-intel/vulnerabilities/id/49dc267a-48cf-487f-bedc-fd892666e9a0?source=cve
Source: security@wordfence.com
Resource: N/A
Change History
0Changes found
Details not found