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CVE-2026-12402— OTP Login & Register Woocommerce <= 2.7.3 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'fb-config' Setting

Quick assessment

Affected
xootix OTP Login & Register Woocommerce
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 的 OTP Login & Register Woocommerce 插件在版本 2.7.3 及之前的所有版本中，由于输入数据未充分清洗和输出未充分转义，存在通过“fb-config”设置项触发的存储型跨站脚本（Stored XSS）漏洞。该漏洞允许具有管理员权限或更高权限的认证攻击者，在被注入脚本的页面上插入任意 Web 脚本，当用户访问该页面时脚本即会执行。在多站点（multisite）环境中，如果普通管理员不具备 能力，攻击者还可以利用此漏洞针对整个网络的超级管理员发起攻击。

CVSS 4.4 · Medium EPSS 0.19% · P9

Possible ATT&CK Techniques 1 AI

T1204.001 · Malicious Link

Affected Version Matrix 1

VendorProduct Version RangeStatus
xootix OTP Login & Register Woocommerce ≤ 2.7.3 affected
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I. Basic Information for CVE-2026-12402

Vulnerability Information
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Vulnerability Title
OTP Login & Register Woocommerce <= 2.7.3 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'fb-config' Setting
Source: CVE Program / CVE List V5
Vulnerability Description
The OTP Login & Register Woocommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'fb-config' Setting in all versions up to, and including, 2.7.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. On multisite installations where administrators do not hold the unfiltered_html capability, this vulnerability can be leveraged to target the network super administrator.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/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
xootix OTP Login & Register Woocommerce 0 ~ 2.7.3 -

II. Public POCs for CVE-2026-12402

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III. Intelligence Information for CVE-2026-12402

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Patches & Fixes for CVE-2026-12402 (1)

Vendor Advisories for CVE-2026-12402 (1)

IV. Related Vulnerabilities

Same product: OTP Login & Register Woocommerce
Same vendor: xootix
Same weakness: CWE-79

V. Comments for CVE-2026-12402

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