Description
BigBlueButton is an open-source virtual classroom. BigBlueButton prior to versions 2.6.12 and 2.7.0-rc.1 is vulnerable to Server-Side Request Forgery (SSRF). This issue is a bypass of CVE-2023-33176. A patch in versions 2.6.12 and 2.7.0-rc.1 disabled follow redirect at `httpclient.execute` since the software no longer has to follow it when using `finalUrl`. There are no known workarounds. We recommend upgrading to a patched version of BigBlueButton.
References (4)
Core 4
Core References
Third Party Advisory x_refsource_confirm
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-h98v-2h8w-99c4
Third Party Advisory x_refsource_misc
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-3q22-hph2-cff7
Third Party Advisory x_refsource_misc
https://github.com/bigbluebutton/bigbluebutton/pull/18494
Third Party Advisory x_refsource_misc
https://github.com/bigbluebutton/bigbluebutton/pull/18580
Scores
CVSS v3
5.6
EPSS
0.0042
EPSS Percentile
33.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-918
Status
published
Products (2)
bigbluebutton/bigbluebutton
2.7.0 alpha1 (6 CPE variants)
bigbluebutton/bigbluebutton
< 2.6.12
Published
Oct 30, 2023
Tracked Since
Feb 18, 2026