CVE-2026-15602

NEX-Forms <= 9.2.4 - Authenticated (Admin+) SQL Injection via 'additional_params' Parameter

The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to generic SQL Injection via the 'additional_params' parameter in all versions up to, and including, 9.2.4 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with admin-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. This is a second-order vulnerability; the payload is stored via the submission_report2 AJAX handler (which lacks a nonce check and relies solely on a capability that can be configured down to subscriber-level) and triggered when a CSV export is generated.

We have discovered 437 live websites that are affected by CVE-2026-15602.

Run a Free Instant Scan



Affected Software

Product  Nex Forms Express Wp Form Builder
Category Wordpress Plugins
Vulnerable Domains437 live websites (79% of Nex Forms Express Wp Form Builder install base)
Vulnerable Versions
  • from 0 through 9.2.4
Vulnerable Versions Count37 versions ( 93% of all versions)


Common Weakness Enumeration

CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')



Details

  • Published - Aug 16, 2026
  • Updated - Aug 17, 2026

Credits

  • Wordfence PRISM (finder)

Website Distribution by Country

Number of websites using CVE-2026-15602
United States126 websites


Germany84 websites
GB25 websites
Netherlands21 websites
Canada19 websites
France18 websites
Australia17 websites
Italy12 websites
Brazil11 websites
Turkey11 websites

Website Distribution by TLD

Number of websites using CVE-2026-15602
.com178 websites
.de56 websites
.nl21 websites
.com.au18 websites
.org17 websites
.com.br10 websites
.at9 websites
.it9 websites
.co.uk9 websites
.ca8 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-15602

Top websites that are affected by CVE-2026-15602. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
******.de Germany***,***
******.at Austria***,***
*******.de Germany*,***,***
*************.com France*,***,***
*******.***.za South Africa*,***,***
****************.nl Netherlands*,***,***
********.com Germany*,***,***
*******.de Germany*,***,***
***.cl Chile*,***,***
**********************.com United States*,***,***
See full domain list

FAQ

CVE-2026-15602 is Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in Nex Forms Express Wp Form Builder
A total of 437 websites have been identified as vulnerable to CVE-2026-15602, based on global website indexing conducted by WebTechSurvey.
The Nex Forms Express Wp Form Builder is affected by the CVE-2026-15602 vulnerability.
Nex Forms Express Wp Form Builder versions up to and including 9.2.4 are vulnerable to CVE-2026-15602.