CVE-2024-54676: Apache OpenMeetings: Deserialisation of untrusted data in cluster mode

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 68.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-01-08 · updated 2026-06-17
Weakness: CWE-502

Description

Vendor: The Apache Software Foundation Versions Affected: Apache OpenMeetings from 2.1.0 before 8.0.0 Description: Default clustering instructions at https://openmeetings.apache.org/Clustering.html doesn't specify white/black lists for OpenJPA this leads to possible deserialisation of untrusted data. Users are recommended to upgrade to version 8.0.0 and update their startup scripts to include the relevant 'openjpa.serialization.class.blacklist' and 'openjpa.serialization.class.whitelist' configurations as shown in the documentation.

Affected products

Apache Software Foundation Apache OpenMeetings: from 2.1 before 8.0.0 — fixed in 8.0.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache OpenMeetings 8.0.0. Check the vendor advisory for mitigations.

References

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