CVE-2026-66447
Received Received - Intake

Unauthenticated SQL Injection in WordPress File Upload

Publication date: 2026-08-06

Last updated on: 2026-08-06

Assigner: Patchstack

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

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Meta Information

Published
2026-08-06
Last Modified
2026-08-06
Generated
2026-08-06
AI Q&A
2026-08-06
EPSS Evaluated
N/A
NVD
CVE-2026-66447
EUVD
EUVD-2026-53883

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
wordpress wordpress 5.1.7
wp_file_upload wp_file_upload to 5.1.7 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

Attack-Flow Graph

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Executive Summary

This is an unauthenticated SQL Injection vulnerability in the WordPress File Upload plugin versions 5.1.7 and earlier. It allows attackers to inject malicious SQL queries into the website's database without needing to authenticate, potentially accessing or manipulating sensitive data.

Detection Guidance

Detecting this vulnerability requires checking if the WordPress File Upload plugin version is 5.1.7 or earlier. Logs may show unusual SQL queries or database access patterns. Use commands like 'grep -r "wp-file-upload" /var/www/' to locate the plugin and check its version in the plugin directory.

Impact Analysis

Attackers could steal sensitive information from your website's database, such as user credentials, personal data, or financial details. Since it requires no authentication, even low-skilled attackers can exploit it, potentially affecting thousands of websites indiscriminately.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR and HIPAA requirements for protecting personal and health data. Non-compliance may result in legal penalties, fines, or reputational damage due to unauthorized data exposure.

Mitigation Strategies

Immediately update the WordPress File Upload plugin to version 5.1.8 or later. If updating is not possible, apply Patchstack's mitigation rule to block attacks until the update is applied. Remove or disable the plugin if unused.

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