CVE-2022-29234

Grace period for lock settings in public/private chats in BigBlueButton

MEDIUM
4.3
CVSS Score
Published: June 1, 2022 at 11:20 PM UTC
Updated: June 17, 2026 at 04:39 AM UTC
1 product affected across 1 vendorBigbluebutton

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

BigBlueButton is an open source web conferencing system. Starting in version 2.2 and prior to versions 2.3.18 and 2.4.1, an attacker could send messages to a locked chat within a grace period of 5s any lock setting in the meeting was changed. The attacker needs to be a participant in the meeting. Versions 2.3.18 and 2.4.1 contain a patch for this issue. There are currently no known workarounds.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.3.18v < 2.4.12.2.0 ≤ v < 2.3.182.4 ≤ v < 2.4.1
Affected range stops below 2.3.18, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.4.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-285

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