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TI-2022-11775 Aliases CVE-2022-29233

Improper access control for breakout rooms in BigBlue Button

Priority LOW 22CWE-285Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-285.

Summary

BigBlueButton is an open source web conferencing system. In BigBlueButton starting with 2.2 but before 2.3.18 and 2.4-rc-1, an attacker can circumvent access controls to gain access to all breakout rooms of the meeting they are in. The permission checks rely on knowledge of internal ids rather than on verification of the role of the user. Versions 2.3.18 and 2.4-rc-1 contain a patch for this issue. There are currently no known workarounds.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01051 64th percentileScored 2026-11-07
Fix Fixed bigbluebutton (bigbluebutton): 2.3.18, 2.4-rc-1

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
bigbluebuttonbigbluebutton2.2 to before 2.3.18; 2.4-alpha-1 to before 2.4-rc-12.3.18, 2.4-rc-1Patch availableCNA
  • bigbluebutton Vendorbigbluebutton Affected 2.2 to before 2.3.18; 2.4-alpha-1 to before 2.4-rc-1 Fixed in 2.3.18, 2.4-rc-1 Patch available CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*2.2.0 to before 2.3.18Vulnerablebigbluebutton
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:*:*:*:*:*:*:*:* Versions 2.2.0 to before 2.3.18 Vulnerable ·bigbluebutton
  • 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

Remediation

  • Fix · CNA bigbluebutton (bigbluebutton) Fixed in 2.3.18, 2.4-rc-1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-29233

References

Patch 3

Advisory 2

  • 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