CVE-2026-1306 PoC — midi-Synth <= 1.1.0 - Unauthenticated Arbitrary File Upload via 'export' AJAX Action

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-1306.yaml

Associated Vulnerability

Title:midi-Synth <= 1.1.0 - Unauthenticated Arbitrary File Upload via 'export' AJAX Action (CVE-2026-1306)
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.

Description

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.

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