CVE-2021-24376— Autoptimize < 2.7.8 - Arbitrary File Upload via "Import Settings"
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I. Basic Information for CVE-2021-24376
Vulnerability Information
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Vulnerability Title
Autoptimize < 2.7.8 - Arbitrary File Upload via "Import Settings"
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Autoptimize WordPress plugin before 2.7.8 attempts to delete malicious files (such as .php) form the uploaded archive via the "Import Settings" feature, after its extraction. However, the extracted folders are not checked and it is possible to upload a zip which contained a directory with PHP file in it and then it is not removed from the disk. It is a bypass of CVE-2020-24948 which allows sending a PHP file via the "Import Settings" functionality to achieve Remote Code Execution.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
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 Autoptimize plugin 2.7.8之前版本存在安全漏洞，攻击者可以通过"Import Settings"功能发送PHP文件来实现远程代码执行。
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)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Unknown | Autoptimize | 2.7.8 ~ 2.7.8 | - |
II. Public POCs for CVE-2021-24376
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://wpscan.com/vulnerability/93edcc23-894a-46c2-84d2-407dcb64ba1ex_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2021-24376
Same Patch Batch · Unknown · 2021-06-21 · 9 CVEs total
| CVE-2021-24370 | Fancy Product Designer < 4.6.9 - Unauthenticated Arbitrary File Upload and RCE | |
| CVE-2021-24366 | Admin Columns Free < 4.3 & Pro < 5.5.1 - Admin+ Stored XSS in Label | |
| CVE-2021-24367 | WP Config File Editor <= 1.7.1 - Authenticated Stored Cross-Site Scripting (XSS) | |
| CVE-2021-24372 | WP Hardening < 1.2.2 - Reflected XSS via URI | |
| CVE-2021-24373 | WP Hardening < 1.2.2 - Reflected XSS via historyvalue | |
| CVE-2021-24377 | Autoptimize < 2.7.8 - Race Condition leading to RCE | |
| CVE-2021-24378 | Autoptimize < 2.7.8 - Authenticated Stored XSS via File Upload | |
| CVE-2021-24379 | Comments Like Dislike < 1.1.4 - Add Like/Dislike Bypass |
IV. Related Vulnerabilities
Same product: Autoptimize
- CVE-2026-2430
Autoptimize <= 3.1.14 - Authenticated (Contributor+) Stored - CVE-2026-2352
Autoptimize <= 3.1.14 - Authenticated (Contributor+) Stored - CVE-2025-13401
Autoptimize <= 3.1.13 - Authenticated (Contributor+) Stored - CVE-2023-2113
Autoptimize < 3.1.7 - Admin+ Stored Cross-Site Scripting via - CVE-2022-4057
Autoptimize < 3.1.0 - Sensitive Data Disclosure
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
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-2021-24376
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