CVE-2026-42163

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Mahara before 25.04.5 and 26.04.0 is vulnerable to unauthorized access to internal accounts via Learning Tools Interoperability (LTI) under certain circumstances. This applies to LTI 1.1 and LTI 1.3 Advantage.

Published 2026-08-17. Last modified 2026-08-31.