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CVE-2026-12406— User Frontend <= 4.3.7 - Missing Authorization to Unauthenticated Arbitrary Attachment Deletion via 'attach_id' Parameter

Quick assessment

Affected
wedevs User Frontend: AI Powered Frontend Posting, User Directory, Profile Builder, 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 User Frontend是WordPress基金会的一款面向网站用户的前端管理组件。 WordPress User Frontend 4.3.7及之前版本存在授权问题漏洞，该漏洞源于插件未正确验证用户是否被授权执行操作，可能导致未经身份验证的攻击者通过wpuf_file_del AJAX操作删除post_author为0的任意媒体附件。

CVSS 5.3 · Medium EPSS 0.56% · P45

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
wedevs User Frontend: AI Powered Frontend Posting, User Directory, Profile Builder, Membership & User Registration ≤ 4.3.7 affected
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I. Basic Information for CVE-2026-12406

Vulnerability Information
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Vulnerability Title
User Frontend <= 4.3.7 - Missing Authorization to Unauthenticated Arbitrary Attachment Deletion via 'attach_id' Parameter
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 authorization bypass in all versions up to, and including, 4.3.7. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to delete arbitrary media attachments whose post_author is 0, such as guest and registration-form uploads, via the wpuf_file_del AJAX action. This is exploitable by unauthenticated visitors on any site where a WPUF shortcode is rendered on a front-end page, as this causes the valid wpuf_nonce value to be localized into publicly accessible JavaScript objects (wpuf_upload and wpuf_frontend), satisfying the sole access control gate.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress User Frontend 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress User Frontend是WordPress基金会的一款面向网站用户的前端管理组件。 WordPress User Frontend 4.3.7及之前版本存在授权问题漏洞，该漏洞源于插件未正确验证用户是否被授权执行操作，可能导致未经身份验证的攻击者通过wpuf_file_del AJAX操作删除post_author为0的任意媒体附件。
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 Builder, Membership & User Registration 0 ~ 4.3.7 -

II. Public POCs for CVE-2026-12406

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III. Intelligence Information for CVE-2026-12406

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Patches & Fixes for CVE-2026-12406 (6)

Vendor Advisories for CVE-2026-12406 (1)

Vendor Pages for CVE-2026-12406 (1)

Same Patch Batch · wedevs · 2026-07-09 · 3 CVEs total

CVE-2026-13011 6.5 MEDIUM ERP: Complete HR, Accounting & CRM Suite with Recruitment and WooCommerce CRM Support <= 1
CVE-2026-12418 5.3 MEDIUM User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Reg

IV. Related Vulnerabilities

Same product: User Frontend: AI Powered Frontend Posting, User Directory, Profile Builder, Membership & User Registration
Same vendor: wedevs
Same weakness: CWE-862

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