CVE-2021-39181

OpenOlat is a web-based learning management system (LMS). Prior to version 15.3.18, 15.5.3, and 16.0.0, using a prepared import XML file (e.g. a course) any class on the Java classpath can be instantiated, including spring AOP bean factories. This can be used to execute code arbitrary code by the attacker. The attack requires an OpenOlat user account with the authoring role. It can not be exploited by unregistered users. The problem is fixed in versions 15.3.18, 15.5.3, and 16.0.0. There are no known workarounds aside from upgrading.

• CWE-91

• https://github.com/OpenOLAT/OpenOLAT/commit/3f219ac457afde82e3be57bc614352ab92c05684Patch, Third Party Advisory
• https://github.com/OpenOLAT/OpenOLAT/security/advisories/GHSA-596v-3gwh-2m9wThird Party Advisory
• https://jira.openolat.org/browse/OO-5548Permissions Required
• https://github.com/OpenOLAT/OpenOLAT/commit/3f219ac457afde82e3be57bc614352ab92c05684Patch, Third Party Advisory
• https://github.com/OpenOLAT/OpenOLAT/security/advisories/GHSA-596v-3gwh-2m9wThird Party Advisory
• https://jira.openolat.org/browse/OO-5548Permissions Required

Published

Sep 1, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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