CVE-2024-26503: Openeclass

Critical severity, CVSS 9.1. EPSS: 1.1% chance of exploitation in the next 30 days.

Unrestricted File Upload vulnerability in Greek Universities Network Open eClass v.3.15 and earlier allows attackers to run arbitrary code via upload of crafted file to certbadge.php endpoint.

Affected products

• Openeclass Openeclass: up to and including 3.15

Published 2024-03-14. Last modified 2026-06-17.