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CRITICAL

CVE-2026-1306

CVSS 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
2026-02-14
Last Modified
2026-04-14

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.

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