NEX-Forms report parameters permit second-order SQL injection
NEX-Forms through 9.2.4 stores the additional_params value through submission_report2, which lacks a nonce and relies on a configurable capability that can be assigned as low as Subscriber. A later CSV export incorporates that stored value into SQL without adequate preparation, enabling second-order SQL injection and database extraction. The exact capability configuration, request action, export trigger, query, and payload are not disclosed.
- Component
- NEX-Forms – Ultimate Forms Plugin for WordPress
- Plugin slug
nex-forms-express-wp-form-builder- Affected
- <= 9.2.4
- Safe version
- See mitigation notes
- Published
- Aug 16, 2026
This CVE was published Aug 16, 2026 and is one of 36 known issues for this plugin.
Update, patch or deactivate.
No fixed release is identified in the authoritative record. Update when a confirmed patch is available; until then, keep report capabilities administrator-only, disable the affected export, and review report data and database logs. The official upstream changelog lists version 9.2.5, which is newer than the published affected range. Its changelog does not clearly confirm this specific fix, so it is not counted as a known-safe release.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N