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TI-2022-20304 Aliases CVE-2022-41964

BigBlueButton contains Response leaks in anonymous polls

Priority LOW 27CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-200.

Summary

BigBlueButton is an open source web conferencing system. This vulnerability only affects release candidates of BigBlueButton 2.4. The attacker can start a subscription for poll results before starting an anonymous poll, and use this subscription to see individual responses in the anonymous poll. The attacker had to be a meeting presenter. This issue is patched in version 2.4.0. There are no workarounds.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00599 48th percentileScored 2026-11-07
Fix Fixed bigbluebutton (bigbluebutton): 2.4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
bigbluebuttonbigbluebutton2.4-alpha-1 to before 2.4.02.4.0Patch availableCNA
  • bigbluebutton Vendorbigbluebutton Affected 2.4-alpha-1 to before 2.4.0 Fixed in 2.4.0 Patch available CNA

CPE configurations NVD · 13

CPEVersionsRoleVendor
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:alpha1:*:*:*:*:*:*2.4 alpha1Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:alpha2:*:*:*:*:*:*2.4 alpha2Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta1:*:*:*:*:*:*2.4 beta1Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta2:*:*:*:*:*:*2.4 beta2Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta3:*:*:*:*:*:*2.4 beta3Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta4:*:*:*:*:*:*2.4 beta4Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc1:*:*:*:*:*:*2.4 rc1Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc2:*:*:*:*:*:*2.4 rc2Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc3:*:*:*:*:*:*2.4 rc3Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc4:*:*:*:*:*:*2.4 rc4Vulnerablebigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:alpha1:*:*:*:*:*:* Versions 2.4 alpha1 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:alpha2:*:*:*:*:*:* Versions 2.4 alpha2 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta1:*:*:*:*:*:* Versions 2.4 beta1 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta2:*:*:*:*:*:* Versions 2.4 beta2 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta3:*:*:*:*:*:* Versions 2.4 beta3 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:beta4:*:*:*:*:*:* Versions 2.4 beta4 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc1:*:*:*:*:*:* Versions 2.4 rc1 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc2:*:*:*:*:*:* Versions 2.4 rc2 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc3:*:*:*:*:*:* Versions 2.4 rc3 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc4:*:*:*:*:*:* Versions 2.4 rc4 Vulnerable ·bigbluebutton
Show 3 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc5:*:*:*:*:*:*2.4 rc5Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc6:*:*:*:*:*:*2.4 rc6Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc7:*:*:*:*:*:*2.4 rc7Vulnerablebigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc5:*:*:*:*:*:* Versions 2.4 rc5 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc6:*:*:*:*:*:* Versions 2.4 rc6 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4:rc7:*:*:*:*:*:* Versions 2.4 rc7 Vulnerable ·bigbluebutton

Remediation

  • Fix · CNA bigbluebutton (bigbluebutton) Fixed in 2.4.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-41964

References

Patch 1

Advisory 1

  • TI-2026-21873 BigBlueButton: Exposed ClamAV port enables Denial of Service CVSS 3.1HIGH 8.2
  • TI-2025-38047 BigBlueButton vulnerable to Chat DoS via invalid reactionEmojiId CVSS 3.1HIGH 7.5
  • TI-2025-38046 BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation CVSS 3.1HIGH 7.5
  • TI-2022-13109 Cross site scripting in username that will trigger by sending chat CVSS 3.1MEDIUM 6.5
  • TI-2020-09954 BigBlueButton before 2.2.6 allows remote attackers to read arbitrary files because the… CVSS 3.1CRITICAL 9.8
  • TI-2020-16722 BigBlueButton through 2.2.28 uses Ghostscript for processing of uploaded EPS documents… CVSS 3.1CRITICAL 9.8
See all 48 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences