What’s Vulnerable › Vulnerabilities

CVE-2022-23490: Improper access control to polling votes

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-12-16 · updated 2026-06-17
• Weakness: CWE-200

Description

BigBlueButton is an open source web conferencing system. Versions prior to 2.4.0 expose sensitive information to Unauthorized Actors. This issue affects meetings with polls, where the attacker is a meeting participant. Subscribing to the current-poll collection does not update the client UI, but does give the attacker access to the contents of the collection, which include the individual poll responses. This issue is patched in version 2.4.0. There are no workarounds.

Affected products

• bigbluebutton: before 2.4.0 — fixed in 2.4.0

How to fix

Upgrade to a fixed version: bigbluebutton 2.4.0. Check the vendor advisory for mitigations.

References

• https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.0
• https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4qgc-xhw5-6qfg
• https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.0
• https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4qgc-xhw5-6qfg

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