CVE-2026-66447 CRITICAL

CVE-2026-66447: WordPress WordPress File Upload plugin <= 5.1.7 - SQL Injection vulnerability

Vendor Nickboss
Product WordPress File Upload
Weakness CWE-89 · SQLi
Published August 6, 2026
Last update August 6, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Unauthenticated SQL Injection in WordPress File Upload <= 5.1.7 versions.

Explanation of Vulnerability in Simple Terms

02Summary

The WordPress File Upload plugin through version 5.1.7 contains a SQL injection vulnerability in file upload handling. An attacker can inject malicious SQL commands through upload parameters without authentication. This allows reading sensitive database information and potentially modifying data. The vulnerability affects the entire site scope due to its network-accessible nature.

What an attacker can do

03Attacker Capabilities

Read sensitive database information and potentially modify or delete data without authentication.

Potential impact on your site

04Site Impact

Attackers can extract user credentials, posts, settings, and other database contents; data integrity is at risk.

Conditions required to exploit

05Prerequisites

Network access to the WordPress site; no authentication or user interaction required.

Key dates

06Disclosure timeline

August 6, 2026 CVE published
August 6, 2026 Record updated