CVE-2026-6403— Quick Playground <= 1.3.3 - Unauthenticated Path Traversal to Arbitrary File Read via 'stylesheet' Parameter
Possible ATT&CK Techniques 2AI
T1059 · Command and Scripting Interpreter T1083 · File and Directory DiscoveryAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| davidfcarr | Quick Playground | ≤ 1.3.3 | affected |
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I. Basic Information for CVE-2026-6403
Vulnerability Information
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Vulnerability Title
Quick Playground <= 1.3.3 - Unauthenticated Path Traversal to Arbitrary File Read via 'stylesheet' Parameter
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Quick Playground plugin for WordPress is vulnerable to Path Traversal in versions up to and including 1.3.3. This is due to insufficient path validation in the qckply_zip_theme() function, which appends a user-controlled 'stylesheet' parameter directly to the theme root directory path without sanitizing directory traversal sequences. This makes it possible for unauthenticated attackers to trigger the creation of a ZIP archive containing arbitrary files from the server's filesystem — including wp-config.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin Quick Playground 路径遍历漏洞
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。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Quick Playground 1.3.3及之前版本存在路径遍历漏洞，该漏洞源于qckply_zip_theme()函数中路径验证不足，直接将用户控制的stylesheet参数附加到主题根目录路径而未清理目录遍历序
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 |
|---|---|---|---|---|
| davidfcarr | Quick Playground | 0 ~ 1.3.3 | - |
II. Public POCs for CVE-2026-6403
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-6403 (5)
Vendor Advisories for CVE-2026-6403 (1)
IV. Related Vulnerabilities
Same vendor: davidfcarr
- CVE-2026-1830
Quick Playground <= 1.3.1 - Missing Authorization to Unauthe - CVE-2025-48278
WordPress RSVPMarker plugin <= 11.5.6 - SQL Injection Vulne - CVE-2025-39435
WordPress My Marginalia plugin <= 1.0.6 - CSRF to Stored XSS - CVE-2025-31552
WordPress RSVPMarker plugin <= 11.6.7 - SQL Injection vulne - CVE-2025-24600
WordPress RSVPMaker plugin <= 11.4.5 - Broken Access Control
V. Comments for CVE-2026-6403
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