CVE-2026-4512— WP reCaptcha by WebDesignBy < 2.0 – Admin+ Stored XSS
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I. Basic Information for CVE-2026-4512
Vulnerability Information
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Vulnerability Title
WP reCaptcha by WebDesignBy < 2.0 – Admin+ Stored XSS
Source: NVD (National Vulnerability Database)
Vulnerability Description
The reCaptcha by WebDesignBy WordPress plugin before 2.0 does not sanitize or escape the Site Key setting before outputting it in a JavaScript string context via the grecaptcha_js() function. This allows administrators on multisite installations (who do not have the unfiltered_html capability) to inject arbitrary JavaScript that executes for all visitors to the WordPress login page.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin reCaptcha by WebDesignBy 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin reCaptcha by WebDesignBy 2.0之前版本存在跨站脚本漏洞，该漏洞源于未清理或转义站点密钥设置，可能导致多站点管理员注入任意JavaScript代码。
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 |
|---|---|---|---|---|
| Unknown | reCaptcha by WebDesignBy | 0 ~ 2.0 | - |
II. Public POCs for CVE-2026-4512
| # | POC Description | Source Link | Shenlong Link |
|---|
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- WP reCaptcha by WebDesignBy < 2.0 – Admin+ Stored XSS | CVE 2026-4512 | Plugin Vulnerabilitiesexploitvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-4512
IV. Related Vulnerabilities
Same vendor: Unknown
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Magic Export & Import < 1.2.0 - Unauthenticated PII Disclosu - CVE-2026-5337
Frontend File Manager Plugin <= 23.6 - Subscriber+ Arbitrary - CVE-2026-5306
Check & Log Email < 2.0.13 - Unauthenticated Stored XSS
V. Comments for CVE-2026-4512
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