What’s Vulnerable › Vulnerabilities

CVE-2022-23488: BigBlueButton vulnerable to Insertion of Sensitive Information Into Sent Data

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-12-17 · updated 2026-06-17
• Weakness: CWE-200

Description

BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are vulnerable to Insertion of Sensitive Information Into Sent Data. The moderators-only webcams lock setting is not enforced on the backend, which allows an attacker to subscribe to viewers' webcams, even when the lock setting is applied. (The required streamId was being sent to all users even with lock setting applied). This issue is fixed in version 2.4-rc-6. There are no workarounds.

Affected products

• bigbluebutton: before 2.4; 2.4-alpha1, 2.4-alpha2, 2.4-beta1, 2.4-beta2, 2.4-beta3, 2.4-beta4 (+5) — fixed in 2.4

How to fix

Upgrade to a fixed version: bigbluebutton 2.4. Check the vendor advisory for mitigations.

References

• https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6
• https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-j5g3-f74q-rvfq
• https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6
• https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-j5g3-f74q-rvfq

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