CVE-2022-23490Network attack vector

Poll-response disclosure via unrestricted collection subscription

Published Dec 16, 2022 · Updated Apr 17, 2025

Information disclosure in BigBlueButton before 2.4.0 allows remote authenticated users to read individual poll responses during meetings. The bbb-html5 client permits any meeting participant to subscribe to the current-poll collection without enforcing the collection's intended authorization check. Participant access is required, and the consequence is limited to disclosure of individual responses for polls in the joined meeting.

CVSS severity4.3
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in BigBlueButton before 2.4.0 allows remote authenticated users to read individual poll responses during meetings. The bbb-html5 client permits any meeting participant to subscribe to the current-poll collection without enforcing the collection's intended authorization check. Participant access is required, and the consequence is limited to disclosure of individual responses for polls in the joined meeting.

The record

CVE
CVE-2022-23490
Published
Dec 16, 2022
Updated
Apr 17, 2025
Vendor
BigBlueButton Inc.
Product
BigBlueButton
Classifications
CWE-200, CWE-863, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BigBlueButton Inc. · BigBlueButtonversion=< 2.4.0

Published CVSS scores

4.3GitHub, Inc. CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
6.5GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-863Incorrect Authorization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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