Description
BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.2 is vulnerable to unrestricted file upload, where the insertDocument API call does not validate the given file extension before saving the file, and does not remove it in case of validation failures. BigBlueButton 2.6.0-beta.2 contains a patch. There are no known workarounds.
References (2)
Core 2
Core References
Third Party Advisory x_refsource_confirm
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-w98f-6x8w-xhjc
Third Party Advisory x_refsource_misc
https://github.com/bigbluebutton/bigbluebutton/pull/15990
Scores
CVSS v3
5.3
EPSS
0.0009
EPSS Percentile
26.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-434
Status
published
Products (2)
bigbluebutton/bigbluebutton
2.6.0 alpha1 (5 CPE variants)
bigbluebutton/bigbluebutton
< 2.5.18
Published
Oct 30, 2023
Tracked Since
Feb 18, 2026