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I. Basic Information for CVE-2025-3605
Vulnerability Information

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Vulnerability Title
Frontend Login and Registration Blocks <= 1.1.1 - Unauthenticated Privilege Escalation via Account Takeover
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Frontend Login and Registration Blocks plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 1.1.1. This is due to the plugin not properly validating a user's identity prior to updating their details like email via the flr_blocks_user_settings_handle_ajax_callback() function. This makes it possible for unauthenticated attackers to change arbitrary user's email addresses, including administrators, and leverage that to reset the user's password and gain access to their account.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin Frontend Login and Registration Blocks 安全漏洞
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。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress plugin Frontend Login and Registration Blocks 1.0.7及之前版本存在安全漏洞,该漏洞源于身份验证不足,可能导致账户接管。
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
VendorProductAffected VersionsCPESubscribe
arkenonFrontend Login and Registration Blocks * ~ 1.0.7 -
II. Public POCs for CVE-2025-3605
#POC DescriptionSource LinkShenlong Link
1 WordPress Frontend Login and Registration Blocks Plugin <= 1.0.7 is vulnerable to Privilege Escalation https://github.com/Nxploited/CVE-2025-3605POC Details
2Nonehttps://github.com/GadaLuBau1337/CVE-2025-3605POC Details
3Privilege escalation vulnerability exists in the Frontend Login and Registration Blocks plugin for WordPress (versions <= 1.0.7). An unauthenticated attacker can exploit the AJAX endpoint flr_blocks_user_settings_handle_ajax_callback() to change the administrator's email address. Subsequently, the attacker can use the "Forgot Password" feature to reset the administrator's password, thereby gaining unauthorized access to the admin account. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-3605.yamlPOC Details
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III. Intelligence Information for CVE-2025-3605
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