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Critical · 9.8 Scanner template Public exploit CVE-2026-1306 EUVD-2026-6047GHSA-6m5f-57jg-w742

midi-Synth <= 1.1.0 - Unauthenticated Arbitrary File Upload via 'export' AJAX Action

Published Feb 14, 2026 · Updated Apr 8, 2026 · Assigned by Wordfence

Vendor: adminkov Product: midi-Synth Category: Web / CMS

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.

Affected products

VendorProductAffectedFixed
adminkov midi-Synth ≤ 1.1.0 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 2 repositories

  • SecureNet-Dynamics/CVE-2026-1306 ★ 0 · Oct 27, 2026

    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.…

  • murrez/CVE-2026-1306 ★ 0 · Apr 28, 2026

    PoC list runner for CVE-2026-1306 (WordPress midi-Synth ≤1.1.0): fetches exposed midiSynth_nonce, POSTs export AJAX to drop files under sound/. Authorized security testing only.

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.

References