CVE-2026-9017

NEX-Forms <= 9.2.2 - Missing Authorization to Unauthenticated Arbitrary Form Entry Modification via nf_send_nf_email AJAX Action

The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 9.2.2. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite the saved_admin_email, saved_user_email, and saved_user_email_address fields of arbitrary form entries belonging to other users, and cause the site to dispatch attacker-controlled email content to attacker-chosen recipient addresses.

We have discovered 452 live websites that are affected by CVE-2026-9017.

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Affected Software

Product  Nex Forms Express Wp Form Builder
Category Wordpress Plugins
Vulnerable Domains452 live websites (78% of Nex Forms Express Wp Form Builder install base)
Vulnerable Versions
  • from 0 through 9.2.2
Vulnerable Versions Count35 versions ( 90% of all versions)


Common Weakness Enumeration

CWE-862 Missing Authorization



Details

  • Published - Jul 11, 2026
  • Updated - Jul 15, 2026

Credits

  • Michael Iden (Mickhat) (finder)

Website Distribution by Country

Number of websites using CVE-2026-9017
United States128 websites


Germany82 websites
GB26 websites
Netherlands20 websites
France19 websites
Canada19 websites
Australia16 websites
Italy14 websites
Austria13 websites
Brazil11 websites

Website Distribution by TLD

Number of websites using CVE-2026-9017
.com182 websites
.de55 websites
.nl20 websites
.com.au19 websites
.org15 websites
.at13 websites
.it9 websites
.co.uk9 websites
.com.br9 websites
.fr8 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-9017

Top websites that are affected by CVE-2026-9017. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
*****************.com United States***,***
******.at Austria***,***
*************.com France*,***,***
*******.***.za South Africa*,***,***
****************.nl Netherlands*,***,***
********.com Germany*,***,***
*******.de Germany*,***,***
***.cl Chile*,***,***
**********************.com United States*,***,***
***.**.nz Australia*,***,***
See full domain list

FAQ

CVE-2026-9017 is Missing Authorization in Nex Forms Express Wp Form Builder
A total of 452 websites have been identified as vulnerable to CVE-2026-9017, based on global website indexing conducted by WebTechSurvey.
The Nex Forms Express Wp Form Builder is affected by the CVE-2026-9017 vulnerability.
Nex Forms Express Wp Form Builder versions up to and including 9.2.2 are vulnerable to CVE-2026-9017.

References