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CVE-2026-100186— User Profile Builder <= 4.0.3 - Unauthenticated Stored Cross-Site Scripting via First Name Field

Quick assessment

Affected
cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor
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 插件"User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor"在所有 4.0.3 及更早版本中，由于输入清理和输出转义不足，其“名字”（First Name）字段存在存储型跨站脚本（Stored XSS）漏洞。该漏洞允许未认证的攻击者在页面上注入任意 Web 脚本，这些脚本会在任何用户访问被注入的页面时执行。此漏洞仅在插件启用了“邮件确认”（Email Confirmat

CVSS 7.2 · High EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor ≤ 4.0.3 affected
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I. Basic Information for CVE-2026-100186

Vulnerability Information
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Vulnerability Title
User Profile Builder <= 4.0.3 - Unauthenticated Stored Cross-Site Scripting via First Name Field
Source: CVE Program / CVE List V5
Vulnerability Description
The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via First Name Field in all versions up to, and including, 4.0.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This vulnerability is only exploitable when the Email Confirmation feature is enabled in Profile Builder.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor 0 ~ 4.0.3 -

II. Public POCs for CVE-2026-100186

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III. Intelligence Information for CVE-2026-100186

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Patches & Fixes for CVE-2026-100186 (1)

Vendor Pages for CVE-2026-100186 (3)

Same Patch Batch · cozmoslabs · 2026-10-16 · 4 CVEs total

CVE-2026-109447 8.1 HIGH User Profile Builder <= 4.0.3 - Unauthenticated Privilege Escalation to 'role' Parameter v
CVE-2026-107768 7.2 HIGH TranslatePress <= 3.3.7 - Unauthenticated Stored Cross-Site Scripting via Comment Anchor h
CVE-2026-107748 6.4 MEDIUM User Profile Builder <= 4.0.3 - Authenticated (Subscriber+) Stored Cross-Site Scripting vi

IV. Related Vulnerabilities

Same product: User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor
Same vendor: cozmoslabs
Same weakness: CWE-79

V. Comments for CVE-2026-100186

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