CVE-2023-4309: Electionservicesco Internet Election Service

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

Election Services Co. (ESC) Internet Election Service is vulnerable to SQL injection in multiple pages and parameters. These vulnerabilities allow an unauthenticated, remote attacker to read or modify data for any elections that share the same backend database. ESC deactivated older and unused elections and enabled web application firewall (WAF) protection for current and future elections on or around 2023-08-12.

Affected products

• Electionservicesco Internet Election Service: affected versions not specified

Published 2023-10-10. Last modified 2026-06-17.