CVE-2021-39181

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    CVE-2021-39181

    Published: 1 Sept 2021Last Modified: 9 Jul 2026

    Summary:

    Details: 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.

    References: https://github.com/OpenOLAT/OpenOLAT/security/advisories/GHSA-596v-3gwh-2m9w, https://jira.openolat.org/browse/OO-5548, https://github.com/OpenOLAT/OpenOLAT/commit/3f219ac457afde82e3be57bc614352ab92c05684

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -e330a255b2c53d1bee0d7193596f88f69a8e4b39

    Affected versions

    OpenOLAT_15.5.2
    OpenOLAT_15.5.1
    OpenOLAT_15.5.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-39181 | CVE-DB