PatchSiren cyber security CVE debrief
CVE-2026-13040 webaways CVE debrief
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. This vulnerability has a high impact on the security of affected systems.
- Vendor
- webaways
- Product
- NEX-Forms – Ultimate Forms Plugin for WordPress
- CVSS
- HIGH 7.2
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-07-03
- Original CVE updated
- 2026-07-07
- Advisory published
- 2026-07-03
- Advisory updated
- 2026-07-07
Who should care
Administrators and users of the NEX-Forms – Ultimate Forms Plugin for WordPress plugin should be aware of this vulnerability and take immediate action to protect their sites. This includes reviewing the plugin's configuration, updating to the latest version, and implementing additional security measures.
Technical summary
The vulnerability exists in the NEX-Forms – Ultimate Forms Plugin for WordPress plugin, specifically in the handling of the 'real_val__' parameter. The plugin does not properly sanitize and escape user input, allowing unauthenticated attackers to inject malicious scripts. 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. This vulnerability can be mitigated by updating to the latest version of the plugin and implementing additional security measures.
Defensive priority
High
Recommended defensive actions
- Update the NEX-Forms – Ultimate Forms Plugin for WordPress plugin to the latest version.
- Implement input validation and output encoding for user-supplied data.
- Use a Web Application Firewall (WAF) to detect and prevent common web attacks.
- Monitor your website for suspicious activity and implement incident response plans.
- Review compensating controls for exposed systems while remediation is scheduled and verified.
- Check relevant monitoring, detection, and logs for exposed assets that need extra review.
- Track exceptions, retest remediated assets, and close the item only after evidence is documented.
Evidence notes
The CVE record was published on 2026-07-03T06:16:21.590Z and was last modified on 2026-07-07T18:16:34.557Z. The NVD entry is currently Deferred. This information is based on the CVE record and NVD entry. Further verification is recommended to confirm affected scope and severity.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-03T06:16:21.590Z and has not been modified since then. The NVD entry is currently Deferred.