CVEvulnerability

CVE-2026-46355

7.1 HIGH Published 2026-08-20 Modified 2026-10-26 Official page ↗

Status: Deferred
Published: 2026-08-20
Last modified: 2026-10-26
Assigner: [email protected]
CVSS 3.1 ([email protected]): 7.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Weaknesses: CWE-287

Description

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton exposed /bigbluebutton/api/handleJoinExistingUser through bigbluebutton-web/grails-app/controllers/org/bigbluebutton/web/controllers/ApiController.groovy. A requester able to supply an existingUserID for an active participant could reuse that participant's session and impersonate the participant in the same meeting because handleJoinExistingUser was a routable controller action rather than a private helper. This issue is fixed in version 3.0.23.

Weakness · CWE (1)

CWE-287 Improper Authentication weakness

References

https://github.com/bigbluebutton/bigbluebutton/commit/972b04e474e195cbd708b5b3f0485fe528a1a85b github.com
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v3.0.23 github.com
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-38fw-2gq7-ccgr github.com

CVE-2026-46355

Description

Related

Weakness · CWE (1)

References