CVE-2020-6135: OS4ED Opensis

High severity, CVSS 8.8. EPSS: 1.8% chance of exploitation in the next 30 days.

An exploitable SQL injection vulnerability exists in the Validator.php functionality of OS4Ed openSIS 7.3. A specially crafted HTTP request can lead to SQL injection. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Affected products

• OS4ED Opensis: version 7.3 only

Published 2020-09-01. Last modified 2026-06-17.