CVE-2021-4436— 3DPrint Lite < 1.9.1.5 - Unauthenticated Arbitrary File Upload
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I. Basic Information for CVE-2021-4436
Vulnerability Information
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Vulnerability Title
3DPrint Lite < 1.9.1.5 - Unauthenticated Arbitrary File Upload
Source: NVD (National Vulnerability Database)
Vulnerability Description
The 3DPrint Lite WordPress plugin before 1.9.1.5 does not have any authorisation and does not check the uploaded file in its p3dlite_handle_upload AJAX action , allowing unauthenticated users to upload arbitrary file to the web server. However, there is a .htaccess, preventing the file to be accessed on Web servers such as Apache.
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 3DPrint Lite 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 3DPrint Lite 1.9.1.5之前版本存在安全漏洞，该漏洞源于不会在p3dlite_handle_upload AJAX 操作中检查上传的文件，允许未经身份验证的用户将任意文件上传到 Web 服务器。
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)
Shenlong Deep Dive — AI Deep Analysis
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Unknown | 3DPrint Lite | 0 ~ 1.9.1.5 | - |
II. Public POCs for CVE-2021-4436
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | The plugin does not have any authorisation and does not check the uploaded file in its p3dlite_handle_upload AJAX action , allowing unauthenticated users to upload arbitrary file to the web server. However, there is a .htaccess, preventing the file to be accessed on Web servers such as Apache. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-4436.yaml | POC Details |
AI-Generated POCPremium
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- https://wpscan.com/vulnerability/c46ecd0d-a132-4ad6-b936-8acde3a09282/exploitvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2021-4436
IV. Related Vulnerabilities
Same product: 3DPrint Lite
- CVE-2025-3428
3DPrint Lite <=2.1.3.6 - Authenticated (Admin+) SQL Injectio - CVE-2025-3430
3DPrint Lite <=2.1.3.6 - Authenticated (Admin+) SQL Injectio - CVE-2025-3429
3DPrint Lite <=2.1.3.6 - Authenticated (Admin+) SQL Injectio - CVE-2025-3427
3DPrint Lite <=2.1.3.6 - Authenticated (Admin+) SQL Injectio - CVE-2025-30865
WordPress 3DPrint Lite plugin <= 2.1.3.5 - Cross Site Reques
Same vendor: Unknown
- CVE-2026-6433
Custom CSS JS PHP <= 2.0.7 - Unauthenticated SQL Injection t - CVE-2026-4935
SureTriggers < 1.1.23 – Unauthenticated SQLi - CVE-2026-5335
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-2021-4436
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