CVE-2026-5127— User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration <= 4.3.1 - Authenticated (Subscriber+) PHP Object Injection
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I. Basic Information for CVE-2026-5127
Vulnerability Information
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Vulnerability Title
User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration <= 4.3.1 - Authenticated (Subscriber+) PHP Object Injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
The User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration plugin for WordPress is vulnerable to Deserialization of Untrusted Data in versions up to, and including, 4.3.1 This is due to insufficient input validation and type checking on the wpuf_files parameter during form submission, combined with unconditional deserialization via maybe_unserialize() when displaying post content. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary PHP objects, which can be leveraged to execute arbitrary code, delete arbitrary files, or perform other malicious actions if a POP chain is present on the target system.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin User Frontend 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin User Frontend 4.3.1及之前版本存在代码问题漏洞，该漏洞源于对wpuf_files参数输入验证和类型检查不足，结合无条件反序列化，可能导致经过身份验证的攻击者注入任意PHP对象，从而执行任意代码、删除
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| wedevs | User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration | 0 ~ 4.3.1 | - |
II. Public POCs for CVE-2026-5127
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same vendor: wedevs
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WordPress WP User Frontend plugin <= 4.2.8 - Broken Access C - CVE-2026-24364
WordPress WP User Frontend plugin <= 4.2.5 - Broken Access C
Same weakness: CWE-502
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V. Comments for CVE-2026-5127
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