What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-06-01 · updated 2026-06-17
• Weakness: CWE-200

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.

Affected products

• bigbluebutton: from 2.2.0 before 2.3.9; 2.4-alpha1, 2.4-alpha2 — fixed in 2.3.9

How to fix

Upgrade to a fixed version: bigbluebutton 2.3.9. Check the vendor advisory for mitigations.

References

• 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
• 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
• https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3fqh-p4qr-vfm9

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