// For flags

CVE-2023-0439

NEX-Forms < 8.4.4 - Authenticated Stored XSS

Severity Score

5.4
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

The NEX-Forms WordPress plugin before 8.4.4 does not escape its form name, which could lead to Stored Cross-Site Scripting issues. By default only SuperAdmins (in multisite) / admins (in single site) can create forms, however there is a settings allowing them to give lower roles access to such feature.

The NEX-Forms - Ultimate Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via form names parameter in versions up to, and including, 8.4.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with administrator-level access to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The plugin has the option to allow lower-level users access to the form, which may make this issue exploitable by lower-privileged users in some instances.

*Credits: Felipe Restrepo Rodriguez and Edison Poveda, WPScan
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
Poc
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-01-23 CVE Reserved
  • 2023-06-26 CVE Published
  • 2024-10-30 CVE Updated
  • 2024-10-30 First Exploit
  • 2024-12-17 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Basixonline
Search vendor "Basixonline"
 Nex-forms
Search vendor "Basixonline" for product "Nex-forms"
 < 8.4.4
Search vendor "Basixonline" for product "Nex-forms" and version " < 8.4.4"
wordpress
Affected