SQL Injection Vulnerability in Post Voting System WordPress Plugin
CVE-2026-89303

Currently unrated

Key Information:

Vendor

WordPress
Status
Post Voting System
Vendor
CVE Published:
28 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-89303?

The Post Voting System plugin for WordPress versions up to 1.0 is vulnerable due to improper sanitization and escaping of parameters in SQL queries. This flaw allows any authenticated user to exploit the plugin, potentially leading to unauthorized database access and manipulation through SQL injection attacks. Proper input validation and parameterization are essential measures that need to be implemented to safeguard against such vulnerabilities.

Affected Version(s)

Post Voting System 0 <= 1.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-89303 - Proof of Concept

References

https://wpscan.com/vulnerability/dbe62e96-6493-4385-92a2-...
exploitvdb-entrytechnical-description

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Erwan LR (WPScan)
WPScan
.