PT-2026-79183 · Unknown · Bigbluebutton
CVE-2026-46355
·
Published
2026-08-20
·
Updated
2026-08-20
CVSS v3.1
7.1
High
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
BigBlueButton versions prior to 3.0.23
Description
An issue exists where the endpoint '/bigbluebutton/api/handleJoinExistingUser' is exposed via the
ApiController.groovy controller. Because the handleJoinExistingUser() function was implemented as a routable controller action instead of a private helper, a requester can provide an existingUserID of an active participant to reuse their session and impersonate them within the same meeting.Recommendations
Update to version 3.0.23.
Exploit
Fix
Improper Authentication
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Weakness Enumeration
Related Identifiers
Affected Products
Bigbluebutton