What is the CVSS score of CVE-2026-1306?

CVE-2026-1306 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of WordPress are affected by CVE-2026-1306?

A critical vulnerability in the midi-Synth WordPress plugin allows unauthenticated attackers to upload malicious files and potentially execute arbitrary code on affected websites.

Is there a public PoC exploit available for CVE-2026-1306?

Yes, a public proof-of-concept exploit is available for CVE-2026-1306. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-1306?

Within 24 hours: Disable or remove the midi-Synth plugin immediately; audit server logs for suspicious file uploads since plugin installation. Within 7 days: Scan the server for backdoors, webshells, and unauthorized files; review file integrity on web root; change all credentials. Within 30 days: Implement file upload restrictions via Web Application Firewall; consider alternative plugins with active security maintenance; conduct full security assessment.

WordPress CVE-2026-1306

CRITICAL

Unrestricted Upload of File with Dangerous Type (CWE-434)

2026-02-14 security@wordfence.com

WordPress RCE File Upload

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:03 vuln.today

CVE Published

Feb 14, 2026 - 07:16 nvd

CRITICAL 9.8

DescriptionCVE.org

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.