CVE-2026-33005 Apache OpenMeetings: Insufficient checks in FileWebService

What is CVE-2026-33005?

CVE-2026-33005 is a medium-severity missing authorization vulnerability in Apache OpenMeetings, published on 9 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Improper Handling of Insufficient Privileges vulnerability in Apache OpenMeetings.

Any registered user can query web service with their credentials and get files/sub-folders of any folder by ID (metadata only NOT contents). Metadata includes id, type, name and some other field. Full list of fields get be checked at FileItemDTO object.

This issue affects Apache OpenMeetings: from 3.10 before 9.0.0.

Users are recommended to upgrade to version 9.0.0, which fixes the issue.

Weakness: CWE-274

Which versions are affected by CVE-2026-33005?

2 open source packages ship an affected version, including org.apache.openmeetings:openmeetings-parent. It affects 1 product.

Products include Apache Openmeetings.

How do I fix CVE-2026-33005?

Upgrade org.apache.openmeetings:openmeetings-parent to 9.0.0 or later.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-33005 being exploited?

There is no known exploitation of CVE-2026-33005 in the wild and no public exploit code.

Other vulnerabilities in Apache OpenMeetings

• CVE-2017-7664 Apache OpenMeetings does not correctly validate uploaded XML documents Critical 10.0
• CVE-2024-54676 Apache OpenMeetings: Deserialisation of untrusted data in cluster mode Critical 9.8
• CVE-2023-28326 Apache OpenMeetings: allows user impersonation Critical 9.8
• CVE-2016-8736 Apache OpenMeetings RCE Critical 9.8
• CVE-2017-7673 Apache OpenMeetings has Inadequate Encryption Strength Critical 9.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-78cg-fc6c-w44w.