VULNERABILITY INTELLIGENCE

CVE-2023-43797

CVSS score6.3 MEDIUM
EPSS probability0.47%
CISA KEVNot currently listed
Published2023-10-30
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Description

BigBlueButton is an open-source virtual classroom. Prior to versions 2.6.11 and 2.7.0-beta.3, Guest Lobby was vulnerable to cross-site scripting when users wait to enter the meeting due to inserting unsanitized messages to the element using unsafe innerHTML. Text sanitizing was added for lobby messages starting in versions 2.6.11 and 2.7.0-beta.3. There are no known workarounds.

Weakness classification

  • security-advisories@github.com: CWE-79

Primary references