Quick answers
- Is CVE-2026-89303 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-89303 being exploited in the wild.
- How severe is CVE-2026-89303?
- Informational severity, published 28 September 2026.
- Which products and versions are affected?
- WPScan Post Voting System through 1.0.
- Is there a fix for CVE-2026-89303?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-89303 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-89303?
- Check whether you run WPScan Post Voting System at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The plugin fails to properly sanitize and escape the 'row' parameter before using it in a SQL query, enabling authenticated SQL injection attacks. This vulnerability requires authentication at the subscriber level or above, and affects the plugin through version 1.0. An attacker can craft malicious SQL statements to read, modify, or delete database content.
Affected products
- WPScan Post Voting System through 1.0
Timeline
- 2026-09-25: disclosed
- 2026-09-18: advisory