CVE-2023-28326 is a critical-severity (CVSS 9.8) Missing Authentication vulnerability in org.apache.openmeetings:openmeetings-parent. A fix is available for org.apache.openmeetings:openmeetings-parent — see the affected versions and patch details below.
Apache OpenMeetings: allows user impersonation
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2023-28326.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
org.apache.openmeetings:openmeetings-parentReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
The Apache Software Foundation's OpenMeetings from 2.0.0 before 7.0.0 is missing authentication on meeting invitation URLs. An invitation URL contains a hash that automatically logs in as the invited user. An unauthorized user could obtain this URL and log in to the meeting as an invited user, in effect elevating their privileges in the meeting room. OpenMeetings 7.0.0 disables this option if a contact is not selected.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.apache.openmeetings:openmeetings-parent | ≥ 2.0.0&&< 7.0.0 | 7.0.0org.apache.openmeetings:openmeetings-parent:7.0.0 |
Affected Products
openmeetingsapacheDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.openmeetings:openmeetings-parent, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.openmeetings:openmeetings-parent to 7.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-28326 is resolved across your whole dependency graph.
Workarounds
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.
Frequently Asked Questions
Is CVE-2023-28326 in your dependencies?
Find it across Maven, including transitive dependencies.