CVE-2026-12142

HIGH

NEX-Forms <= 9.2.2 - Unauthenticated Stored Cross-Site Scripting via '_name[]' Array Parameter

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-12142. PoCs published by HermesNA-1.

AI-analyzed exploit summary This repository contains an auto-generated module stub for CVE-2026-12142, a stored XSS vulnerability in the NEX-Forms WordPress plugin (versions up to 9.2.2). The code includes placeholder methods (`check()` and `run()`) with no functional exploit implementation, only references to vulnerable code paths in the plugin.

Description

The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via '_name[]' Array Parameter in all versions up to, and including, 9.2.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The wp_kses() output filtering pass provides no mitigation because NEXForms_allowed_tags() explicitly permits &lt;script&gt;, &lt;iframe src/srcdoc&gt;, and JS event handlers such as onClick, onBlur, and onChange in its allow-list.

Exploits (1)

github STUB 1 stars
by HermesNA-1 · pythonpoc
https://github.com/HermesNA-1/SnakeSploit/tree/main/data/modules_generated/cve-2026-12142_the_nex-forms_ultimate.py

This repository contains an auto-generated module stub for CVE-2026-12142, a stored XSS vulnerability in the NEX-Forms WordPress plugin (versions up to 9.2.2). The code includes placeholder methods (`check()` and `run()`) with no functional exploit implementation, only references to vulnerable code paths in the plugin.

Classification
Stub 99%
Attack Type
Xss
Complexity
Moderate
Reliability
Theoretical
Target: NEX-Forms – Ultimate Forms Plugin for WordPress (versions up to and including 9.2.2)
No auth needed
Prerequisites: Target must have a vulnerable version of NEX-Forms plugin installed · Attacker must be able to submit a crafted form with malicious `_name[]` parameter
mistral-large-3 · analyzed Jul 09, 2026 Full analysis →

References (14)

Core 14
Core References

Scores

CVSS v3 7.2
EPSS 0.0030
EPSS Percentile 22.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
webaways/NEX-Forms – Ultimate Forms Plugin for WordPress < 9.2.2
Published Jul 01, 2026
Tracked Since Jul 01, 2026