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.
References (5)
Core 5
Core References
Patch, Third Party Advisory x_refsource_confirm
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-36vc-c338-6xjv
Patch, Third Party Advisory x_refsource_misc
https://github.com/bigbluebutton/bigbluebutton/pull/13850
Patch, Third Party Advisory x_refsource_misc
https://github.com/bigbluebutton/bigbluebutton/pull/14265
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.18
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4.1
Scores
CVSS v3
4.3
EPSS
0.0078
EPSS Percentile
51.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-285
Status
published
Products (1)
bigbluebutton/bigbluebutton
2.2.0 - 2.3.18
Published
Jun 02, 2022
Tracked Since
Feb 18, 2026