What is the CVSS score of CVE-2026-1947?

CVE-2026-1947 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 0.0%.

Which versions of WordPress are affected by CVE-2026-1947?

An unauthenticated attacker can exploit a critical vulnerability in NEX-Forms WordPress plugin to modify form submission data without authorization.

How to fix or mitigate CVE-2026-1947?

Within 24 hours: Disable NEX-Forms plugin or restrict form submissions to authenticated users only via web application firewall rules. Within 7 days: Audit form database for unauthorized modifications and assess impact scope across all affected instances. Within 30 days: Upgrade to patched version upon availability, or migrate to alternative form plugin and remove NEX-Forms entirely.

WordPress CVE-2026-1947

EUVD-2026-12200 HIGH

Authorization Bypass Through User-Controlled Key (CWE-639)

2026-03-15 Wordfence

WordPress Authentication Bypass

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

Re-analysis Queued

Apr 22, 2026 - 21:37 vuln.today

cvss_changed

EUVD ID Assigned

Mar 15, 2026 - 02:00 euvd

EUVD-2026-12200

Analysis Generated

Mar 15, 2026 - 02:00 vuln.today

CVE Published

Mar 15, 2026 - 01:19 nvd

HIGH 7.5

DescriptionCVE.org

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.

AnalysisAI

CVE-2026-1947 is an Insecure Direct Object Reference vulnerability in NEX-Forms WordPress plugin (versions ≤9.1.9) that allows unauthenticated remote attackers to overwrite arbitrary form entries without any authentication. The vulnerability has a CVSS score of 7.5 and while not currently in KEV or having public POCs, it represents a significant data integrity risk for WordPress sites using this forms plugin.

Technical ContextAI

The vulnerability affects the NEX-Forms – Ultimate Forms Plugin for WordPress (CPE: cpe:2.3:a:webaways:nex-forms_–_ultimate_forms_plugin_for_wordpress:*:*:*:*:*:*:*:*) in all versions through 9.1.9. The root cause is CWE-639 (Authorization Bypass Through User-Controlled Key), specifically in the submit_nex_form() function which fails to validate the 'nf_set_entry_update_id' parameter. This allows attackers to manipulate form entry IDs and overwrite existing form submissions without proper authorization checks.

RemediationAI

Update NEX-Forms plugin to version 9.2.0 or later which contains the fix (based on the changeset reference https://plugins.trac.wordpress.org/changeset/3470888/nex-forms-express-wp-form-builder). No specific workarounds are mentioned. For detailed vulnerability information, refer to the Wordfence advisory at https://www.wordfence.com/threat-intel/vulnerabilities/id/b2a8c307-2430-4ea9-afe0-e5e758eabdd1?source=cve.