CVE-2026-1306 | The midi-Synth plugin for WordPress is vulnerable to arbitra… | CVSS 9.8 CRITICAL

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.

Metadata

CVE ID: CVE-2026-1306
State: PUBLISHED
Assigner: Wordfence
Reserved: 2026-01-21 19:20 UTC
Published: 2026-02-14 06:42 UTC
Last updated: 2026-04-08 17:26 UTC
Primary CWE: CWE-434
CWE-434 Unrestricted Upload of File with Dangerous Type
Vendor / Product: adminkov / midi-Synth
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
adminkov	midi-Synth	—	0 ≤ 1.1.0

Weakness (CWE)

CWE	Source	Description
CWE-434	cna	CWE-434 Unrestricted Upload of File with Dangerous Type

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (6)