Exposure of messages in BigBlueButton public chats
Published Jun 1, 2022
6.5
MEDIUMCVSS 3.1
EPSS 1.06%
Description
BigBlueButton is an open source web conferencing system. Starting with version 2.2 and prior to versions 2.3.9 and 2.4-beta-1, an attacker can circumvent access controls to obtain the content of public chat messages from different meetings on the server. The attacker must be a participant in a meeting on the server. BigBlueButton versions 2.3.9 and 2.4-beta-1 contain a patch for this issue. There are currently no known workarounds.
Affected products
-
- Version >= 2.2, < 2.3.9StatusaffectedConstraints-
- Version >= 2.4-alpha-1, < 2.4-beta-1StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bigbluebutton | Bigbluebutton | n/a |
|
- ≥ 2.2.0 · < 2.3.9
- 2.4
- 2.4
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:P/I:N/A:N
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Apr 23, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.06% (0.01064) | 63.43th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.96% (0.00964) | 56.89th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.12% (0.00117) | 28.06th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00069) | 32.33th | v3 (v2023.03.01) |
| Jun 8, 2023 | 0.07% (0.00071) | 29.19th | v3 (v2023.03.01) |
| May 2, 2023 | 0.06% (0.00059) | 22.84th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00051) | 18.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Dec 4, 2022 | 0.95% (0.00950) | 31.37th | v2 (v2022.01.01) |
| Jun 2, 2022 | 0.95% (0.00950) | 29.37th | v2 (v2022.01.01) |
References (4)
- https://github.com/bigbluebutton/bigbluebutton/pull/12861 x_refsource_MISCPatchThird Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.9 x_refsource_MISCRelease NotesThird Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-beta-1 x_refsource_MISCRelease NotesThird Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3fqh-p4qr-vfm9 x_refsource_CONFIRMPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/bigbluebutton/bigbluebutton/pull/12861 | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.3.9 | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-beta-1 | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3fqh-p4qr-vfm9 | x_refsource_CONFIRMPatchThird Party Advisory |
Change history (0)
No recorded changes yet.