CVE-2021-42362— WordPress Popular Posts <= 5.3.2 Authenticated Arbitrary File Upload
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I. Basic Information for CVE-2021-42362
Vulnerability Information
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Vulnerability Title
WordPress Popular Posts <= 5.3.2 Authenticated Arbitrary File Upload
Source: NVD (National Vulnerability Database)
Vulnerability Description
The WordPress Popular Posts WordPress plugin is vulnerable to arbitrary file uploads due to insufficient input file type validation found in the ~/src/Image.php file which makes it possible for attackers with contributor level access and above to upload malicious files that can be used to obtain remote code execution, in versions up to and including 5.3.2.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
危险类型文件的不加限制上传
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是WordPress（Wordpress）基金会的一套使用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 WordPress Popular Posts 存在代码问题漏洞，该漏洞源于 ~/src/Image.php 文件中的输入文件类型验证不足。这使得具有贡献者级别及以上访问权限的攻击者可以通过上传可以使用的恶意文件来进行远程代码执行。
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 |
|---|---|---|---|---|
| WordPress Popular Posts | WordPress Popular Posts | 0.0 ~ 5.3.2 | - |
II. Public POCs for CVE-2021-42362
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | Wordpress Most Popular Post plugin vuln | https://github.com/simonecris/CVE-2021-42362-PoC | POC Details |
| 2 | The WordPress Popular Posts WordPress plugin is vulnerable to arbitrary file uploads due to insufficient input file type validation found in the ~/src/Image.php file which makes it possible for attackers with contributor level access and above to upload malicious files that can be used to obtain remote code execution, | https://github.com/samiba6/CVE-2021-42362 | POC Details |
AI-Generated POCPremium
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IV. Related Vulnerabilities
Same weakness: CWE-434
- CVE-2021-47943
TextPattern CMS 4.8.7 Remote Code Execution via File Upload - CVE-2021-47937
e107 CMS 2.3.0 Authenticated Remote Code Execution via Theme - CVE-2026-41517
Emlog: Remote Code Execution via Malicious Plugin Upload - CVE-2026-6692
Slider Revolution 7.0.0 - 7.0.10 - Authenticated (Subscriber - CVE-2026-41587
CI4MS: Unrestricted PHP File Upload via Theme Installation L
V. Comments for CVE-2021-42362
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