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CVE-2026-105421— WordPress Kit (formerly ConvertKit) for WooCommerce plugin <= 2.2.0 - Broken Access Control vulnerability

Quick assessment

Affected
Kit Kit (formerly ConvertKit) for 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.

Kit Kit（前身为 ConvertKit）的 WooCommerce 插件 convertkit-for-woocommerce 中存在缺少授权检查的安全漏洞，可能导致攻击者利用配置不当的访问控制机制。该漏洞影响 Kit（原 ConvertKit）的 WooCommerce 插件，从初始版本（n/a）至 2.2.0 版本均存在此问题。

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-105421

Vulnerability Information
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Vulnerability Title
WordPress Kit (formerly ConvertKit) for WooCommerce plugin <= 2.2.0 - Broken Access Control vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Missing Authorization vulnerability in Kit Kit (formerly ConvertKit) for WooCommerce convertkit-for-woocommerce allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Kit (formerly ConvertKit) for WooCommerce: from n/a through 2.2.0.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Kit Kit (formerly ConvertKit) for WooCommerce 0 ~ 2.2.0 -

II. Public POCs for CVE-2026-105421

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III. Intelligence Information for CVE-2026-105421

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Other References for CVE-2026-105421 (1)

IV. Related Vulnerabilities

Same product: Kit (formerly ConvertKit) for WooCommerce
Same vendor: Kit
Same weakness: CWE-862

V. Comments for CVE-2026-105421

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