CVE-2026-89303
Deferred Deferred - Pending Action

SQL Injection in Post Voting System WordPress Plugin

Publication date: 2026-09-28

Last updated on: 2026-09-28

Assigner: WPScan

Description
The Post Voting System WordPress plugin through 1.0 does not properly sanitize and escape a parameter before using it in a SQL query, allowing any authenticated user to perform SQL injection attacks.

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Meta Information

Published
2026-09-28
Last Modified
2026-09-28
Generated
2026-10-18
AI Q&A
2026-09-28
EPSS Evaluated
2026-10-16
NVD
CVE-2026-89303
EUVD
EUVD-2026-88094

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
post_voting_system post_voting_system to 1.0 (exc)

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.

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Executive Summary

The Post Voting System WordPress plugin through version 1.0 has a SQL injection vulnerability due to improper sanitization and escaping of the 'row' parameter in SQL queries. This allows any authenticated user, including those with basic subscriber access, to execute malicious SQL commands.

Detection Guidance

To detect this vulnerability, check if the Post Voting System WordPress plugin version 1.0 or below is installed. Look for suspicious SQL query patterns in logs or network traffic involving the 'row' parameter. Use WPScan to scan for vulnerable plugins with the command: wpscan --url <your-site-url> --enumerate vp,vt.

Impact Analysis

An attacker could exploit this to access, modify, or delete sensitive data in the WordPress database, such as user credentials, posts, or plugin settings. This could lead to unauthorized access, data breaches, or website defacement.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR or HIPAA by exposing personal or health data. GDPR requires protecting personal data, while HIPAA mandates safeguarding protected health information. A breach could result in legal penalties and reputational damage.

Mitigation Strategies

Immediately disable or uninstall the Post Voting System plugin if installed. Restrict database access permissions for WordPress users. Monitor database queries for unusual activity. Consider using a web application firewall to block SQL injection attempts.

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