CVE-2026-89303 Post Voting System <= 1.0 - Subscriber+ SQLi via 'row' Parameter
Authenticated users can execute SQL injection attacks via the 'row' parameter in the Post Voting System WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-89303?
CVE-2026-89303 is a medium-severity SQL injection vulnerability in Unknown Post Voting System, published on 28 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-89
Which versions are affected by CVE-2026-89303?
How do I fix CVE-2026-89303?
No fix has been published for CVE-2026-89303 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-89303 being exploited?
There is no known exploitation of CVE-2026-89303 in the wild and no public exploit code.
Sources
Also known as GHSA-m89f-xjqg-7r4m.