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NEX-Forms – Ultimate Forms Plugin for WordPress <= 9.1.9 — Missing Authorization to Unauthenticated Arbitrary Form Entry Modification via nf_set_entry_update_id

CVE-2026-1947Published · Updated

Action summary

Affected: ≤9.1.9Update to 9.1.10 or newer

All remediation steps
Watch plugin
Severity
High7.5
CVSS
7.5
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:H Integrity
High
A:N Availability
None
Weakness
CWE-639 Authorization Bypass Through User-Controlled Key
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

NEX-Forms – Ultimate Forms Plugin for WordPress nex-forms-express-wp-form-builder

  1. Affected≤ 9.1.9
  2. Patched in9.1.10

Update to 9.1.10 or newer.

You are affected if you run ≤ 9.1.9. Version 9.1.10 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under NEX-Forms – Ultimate Forms Plugin for WordPress.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 9.1.10, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch NEX-Forms – Ultimate Forms Plugin for WordPress to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Youssef Elouaer.

The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 9.1.9 via the submit_nex_form() function due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to to overwrite arbitrary form entries via the 'nf_set_entry_update_id' parameter.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in NEX-Forms – Ultimate Forms Plugin for WordPress

All 44
More vulnerabilities in NEX-Forms – Ultimate Forms Plugin for WordPress
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Content-Type Header
≤9.3.2Update to 9.3.3
CVE-2026-96767
Medium5.39.3.0 - Unauthenticated Insecure Direct Object Reference
9.2.1 – 9.3.0Update to 9.3.1
CVE-2026-106166
Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting
≤9.3.1Update to 9.3.2
CVE-2026-96607
Medium4.9Authenticated (Administrator+) SQL Injection via 'operator' Key of the 'additional_params' Parameter
≤9.3.0Update to 9.3.1
CVE-2026-75961
Medium4.9Authenticated (Admin+) SQL Injection via 'additional_params' Parameter
≤9.2.4Update to 9.2.5
CVE-2026-15602

Timeline

  1. CVE published

    Severity high, CVSS 7.5

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVE® identifiers
[object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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