NEX-Forms - Ultimate Form Builder <= 8.4.3 - Authenticated Stored Cross-Site Scripting via Form Name
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | NEX-Forms – Ultimate Forms Plugin for WordPress | <= 8.4.3 | 8.4.4 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-79- Platform
- WordPress
- Package
NEX-Forms – Ultimate Forms Plugin for WordPress- Disclosed
- 26.06.2023
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - a333d5b4-cedf-40ac-8da9-f4965d2a397a - Wordfence Intelligence
Copyright 1999-2026 The MITRE Corporation
Copyright 2012-2026 Defiant Inc.
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Vulnerability history: NEX-Forms – Ultimate Forms Plugin for WordPress
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 42
- First → latest
- 04.2015 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 11
- Medium 29
Disclosures per year
- 2017: 0
- 2018: 0
- 2019: 0
- 2020: 1
- 2021: 2
- 2022: 1
- 2023: 5
- 2024: 8
- 2025: 6
- 2026: 17
earlier: 2
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NEX-Forms - Ultimate Form Builder <= 8.4.3 - Authenticated Stored Cross-Site Scripting via Form Name this entry
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