VULNERABILITY INTELLIGENCE

CVE-2026-46351

CVSS score8.1 HIGH
EPSS probability0.46%
CISA KEVNot currently listed
Published2026-07-16
Last modified2026-07-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Description

BigBlueButton is an open-source virtual classroom. Prior to 3.0.21, bbb-web generated conference sessionToken values with insufficiently secure randomness in bbb-common-web/src/main/java/org/bigbluebutton/api/Util.java and bigbluebutton-web/grails-app/controllers/org/bigbluebutton/web/controllers/ApiController.groovy, allowing a session user to predict other users' conference session tokens and impersonate them. This issue is fixed in version 3.0.21.

Weakness classification

  • security-advisories@github.com: CWE-330

Primary references