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CVE-2026-5127— User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration <= 4.3.1 - Authenticated (Subscriber+) PHP Object Injection

Quick assessment

Affected
wedevs User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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

CVSS 8.8 · High EPSS 1.33% · P70

Affected Version Matrix 1

VendorProduct Version RangeStatus
wedevs User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration ≤ 4.3.1 affected
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
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

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III. Intelligence Information for CVE-2026-5127

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Patches & Fixes for CVE-2026-5127 (18)

Vendor Advisories for CVE-2026-5127 (1)

IV. Related Vulnerabilities

Same product: User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration
Same vendor: wedevs
Same weakness: CWE-502

V. Comments for CVE-2026-5127

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