CVE-2026-13040: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in webaways NEX-Forms – Ultimate Forms Plugin for WordPress
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.
AI Analysis
Technical Summary
The NEX-Forms – Ultimate Forms Plugin for WordPress contains a stored XSS vulnerability in all versions up to 9.2.2. The issue is due to improper neutralization of input during web page generation, specifically through the 'real_val__' parameter. The plugin's submission endpoint (wp_ajax_nopriv_submit_nex_form) is accessible without nonce verification, allowing unauthenticated attackers to inject arbitrary scripts that execute when users access the affected pages. This vulnerability is tracked as CVE-2026-13040 and has a CVSS 3.1 score of 7.2, indicating high severity.
Potential Impact
Successful exploitation allows unauthenticated attackers to inject and execute arbitrary JavaScript in the context of users visiting the affected pages. This can lead to information disclosure, session hijacking, or other client-side impacts. The vulnerability does not affect availability but compromises confidentiality and integrity of user interactions with the plugin.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the vulnerable plugin or disable it if possible. Monitor for updates from the vendor or plugin maintainers and apply patches promptly once released.
CVE-2026-13040: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in webaways NEX-Forms – Ultimate Forms Plugin for WordPress
Description
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.
CVSS v3.1
Score 7.2high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The NEX-Forms – Ultimate Forms Plugin for WordPress contains a stored XSS vulnerability in all versions up to 9.2.2. The issue is due to improper neutralization of input during web page generation, specifically through the 'real_val__' parameter. The plugin's submission endpoint (wp_ajax_nopriv_submit_nex_form) is accessible without nonce verification, allowing unauthenticated attackers to inject arbitrary scripts that execute when users access the affected pages. This vulnerability is tracked as CVE-2026-13040 and has a CVSS 3.1 score of 7.2, indicating high severity.
Potential Impact
Successful exploitation allows unauthenticated attackers to inject and execute arbitrary JavaScript in the context of users visiting the affected pages. This can lead to information disclosure, session hijacking, or other client-side impacts. The vulnerability does not affect availability but compromises confidentiality and integrity of user interactions with the plugin.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the vulnerable plugin or disable it if possible. Monitor for updates from the vendor or plugin maintainers and apply patches promptly once released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-06-23T17:17:56.022Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a474a7527e9c797190a833a
Added to database: 07/03/2026, 05:36:53 UTC
Last enriched: 07/10/2026, 08:32:34 UTC
Last updated: 08/17/2026, 00:41:09 UTC
Views: 67
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