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CVE-2021-4374— WordPress Automatic Plugin <= 3.53.2 - Unauthenticated Arbitrary Options Update

Quick assessment

Affected
ValvePress WordPress Automatic Plugin
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 WordPress Automatic 存在安全漏洞，该漏洞源于 process_form.php 文件中缺少授权和选项验证。

CVSS 9.1 · Critical EPSS 16.41% · P97
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I. Basic Information for CVE-2021-4374

Vulnerability Information
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Vulnerability Title
WordPress Automatic Plugin <= 3.53.2 - Unauthenticated Arbitrary Options Update
Source: CVE Program / CVE List V5
Vulnerability Description
The WordPress Automatic Plugin for WordPress is vulnerable to arbitrary options updates in versions up to, and including, 3.53.2. This is due to missing authorization and option validation in the process_form.php file. This makes it possible for unauthenticated attackers to arbitrarily update the settings of a vulnerable site and ultimately compromise the entire site.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Plugin WordPress Automatic 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 WordPress Automatic 存在安全漏洞，该漏洞源于 process_form.php 文件中缺少授权和选项验证。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
ValvePress WordPress Automatic Plugin * ~ 3.53.3 -

II. Public POCs for CVE-2021-4374

# POC Description Source Link Shenlong Link
1 WordPress Automatic Plugin (versions 3.53.2 and below) contains a critical vulnerability that allows unauthenticated users to change arbitrary WordPress options through the process_form.php script. The vulnerable script uses update_option() on all POST parameters without authentication or capability checks, allowing attackers to create administrator accounts or modify critical settings. The vulnerability can be exploited even if the plugin is deactivated as it's a standalone script. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-4374.yaml POC Details
2 None https://github.com/Pranjal6955/CVE-2021-4374-Testing-Package POC Details
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III. Intelligence Information for CVE-2021-4374

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Vendor Advisories for CVE-2021-4374 (1)

Security Blog Posts for CVE-2021-4374 (1)

IV. Related Vulnerabilities

Same product: WordPress Automatic Plugin
Same vendor: ValvePress
Same weakness: CWE-862

V. Comments for CVE-2021-4374

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