Stored Cross-Site Scripting Vulnerability in NEX-Forms Plugin for WordPress
CVE-2026-5063

7.2HIGH

Key Information:

Vendor

WordPress
Status
Nex-forms – Ultimate Forms Plugin For WordPress
Vendor
CVE Published:
3 May 2026

What is CVE-2026-5063?

The NEX-Forms – Ultimate Forms Plugin for WordPress contains a vulnerability allowing stored cross-site scripting (XSS) through inadequate input sanitization and output escaping. Attackers can exploit this flaw by injecting arbitrary scripts via the POST parameter key names in the submit_nex_form() function. When users access a compromised page, these malicious scripts can execute, posing significant risks to security and user data. Maintaining up-to-date versions and implementing proper security measures is essential to safeguard against such threats.

Affected Version(s)

NEX-Forms – Ultimate Forms Plugin for WordPress 0 <= 9.1.11

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset/3513524/nex-...

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Naoya Takahashi
.