CVE-2026-1306
CRITICALCVSS v3
9.8
CRITICAL
EPSS Score
27.7%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 2/14/2026
- Last Modified
- 4/14/2026
Frequently Asked Questions
What is CVE-2026-1306?
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
Is CVE-2026-1306 actively exploited?
Active exploitation of CVE-2026-1306 has not been confirmed. The EPSS score is 27.7%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-1306?
CVE-2026-1306 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.
Is CVE-2026-1306 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.