CVE-2026-1306: CWE-434 Unrestricted Upload of File with Dangerous Type in adminkov midi-Synth
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.
AI Analysis
Technical Summary
CVE-2026-1306 is a critical vulnerability in the adminkov midi-Synth WordPress plugin (versions up to 1.1.0) caused by unrestricted file upload due to missing validation of file types and extensions in the 'export' AJAX action. The plugin exposes a valid nonce in frontend JavaScript, which unauthenticated attackers can easily access. This combination allows attackers to upload arbitrary files to the server, potentially leading to remote code execution if the uploaded files are executed by the server environment.
Potential Impact
Successful exploitation allows unauthenticated attackers to upload arbitrary files to the affected server, which can lead to full compromise including remote code execution, data theft, or site defacement. The vulnerability affects confidentiality, integrity, and availability of the affected WordPress site.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the affected plugin or disable it to prevent exploitation. Monitor for updates from the vendor or WordPress plugin repository for a security patch addressing this issue.
CVE-2026-1306: CWE-434 Unrestricted Upload of File with Dangerous Type in adminkov midi-Synth
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-1306 is a critical vulnerability in the adminkov midi-Synth WordPress plugin (versions up to 1.1.0) caused by unrestricted file upload due to missing validation of file types and extensions in the 'export' AJAX action. The plugin exposes a valid nonce in frontend JavaScript, which unauthenticated attackers can easily access. This combination allows attackers to upload arbitrary files to the server, potentially leading to remote code execution if the uploaded files are executed by the server environment.
Potential Impact
Successful exploitation allows unauthenticated attackers to upload arbitrary files to the affected server, which can lead to full compromise including remote code execution, data theft, or site defacement. The vulnerability affects confidentiality, integrity, and availability of the affected WordPress site.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the affected plugin or disable it to prevent exploitation. Monitor for updates from the vendor or WordPress plugin repository for a security patch addressing this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-01-21T19:20:30.948Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69901aecc9e1ff5ad8689399
Added to database: 2/14/2026, 6:49:16 AM
Last enriched: 4/9/2026, 11:16:35 AM
Last updated: 5/15/2026, 3:09:26 PM
Views: 295
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