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CVE-2026-6431— User Profile Builder <= 3.15.7 - Unauthenticated Stored Cross-Site Scripting via 'Biographical Info' Meta 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 User Profile Builder是WordPress基金会的一款用户资料构建插件。 WordPress User Profile Builder 3.15.7及之前版本存在跨站脚本漏洞，该漏洞源于对“Biographical Info”元字段参数的输入清理和输出转义不足，存在存储型跨站脚本漏洞，可能导致未经身份验证的攻击者注入任意Web脚本，在用户访问被注入的页面时执行。

CVSS 7.2 · High EPSS 0.24% · P16

Affected Version Matrix 1

VendorProduct Version RangeStatus
cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor ≤ 3.15.7 affected
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I. Basic Information for CVE-2026-6431

Vulnerability Information
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Vulnerability Title
User Profile Builder <= 3.15.7 - Unauthenticated Stored Cross-Site Scripting via 'Biographical Info' Meta 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 the 'Biographical Info' meta field parameter in all versions up to, and including, 3.15.7 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.
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
Vulnerability Title
WordPress User Profile Builder 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress User Profile Builder是WordPress基金会的一款用户资料构建插件。 WordPress User Profile Builder 3.15.7及之前版本存在跨站脚本漏洞，该漏洞源于对“Biographical Info”元字段参数的输入清理和输出转义不足，存在存储型跨站脚本漏洞，可能导致未经身份验证的攻击者注入任意Web脚本，在用户访问被注入的页面时执行。
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
cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor 0 ~ 3.15.7 -

II. Public POCs for CVE-2026-6431

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III. Intelligence Information for CVE-2026-6431

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Vendor Pages for CVE-2026-6431 (2)

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-2026-6431

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