CVE-2026-1306— midi-Synth <= 1.1.0 - Unauthenticated Arbitrary File Upload via 'export' AJAX Action
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I. Basic Information for CVE-2026-1306
Vulnerability Information
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Vulnerability Title
midi-Synth <= 1.1.0 - Unauthenticated Arbitrary File Upload via 'export' AJAX Action
Source: NVD (National Vulnerability Database)
Vulnerability Description
The midi-Synth plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type and file extension validation in the 'export' AJAX action in all versions up to, and including, 1.1.0. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible granted the attacker can obtain a valid nonce. The nonce is exposed in frontend JavaScript making it trivially accessible to unauthenticated attackers.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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 plugin midi-Synth 代码问题漏洞
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 midi-Synth 1.1.0及之前版本存在代码问题漏洞，该漏洞源于缺少文件类型和扩展名验证，可能导致任意文件上传攻击。
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 |
|---|---|---|---|---|
| adminkov | midi-Synth | * ~ 1.1.0 | - |
II. Public POCs for CVE-2026-1306
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | None | https://github.com/richardpaimu34/CVE-2026-1306 | POC Details |
| 2 | WordPress midi-Synth plugin \u003C= 1.1.0 contains an unrestricted file upload vulnerability caused by missing file type and extension validation in the 'export' AJAX action, letting unauthenticated attackers upload arbitrary files and potentially execute remote code, exploit requires attacker to obtain a valid nonce exposed in frontend JavaScript. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-1306.yaml | POC Details |
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IV. Related Vulnerabilities
Same weakness: CWE-434
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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
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