CVSS 3.1
6.1 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCVE-2022-31065
Medium (6.1) in bigbluebutton bigbluebutton. EPSS 0.8% chance of exploitation in the next 30 days.
BigBlueButton is an open source web conferencing system. In affected versions an attacker can embed malicious JS in their username and have it executed on the victim's client. When a user receives a private chat from the attacker (whose username contains malicious JavaScript), the script gets executed. Additionally when the victim receives a notification that the attacker has left the session. This issue has been patched in version 2.4.8 and 2.5.0. There are no known workarounds for this issue.
Severity
- EPSS
- 0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Affected
- bigbluebutton:bigbluebutton
References
- https://github.com/bigbluebutton/bigbluebutton/pull/15087
- https://github.com/bigbluebutton/bigbluebutton/pull/15090
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-8m2p-7qv3-qff7
- https://github.com/bigbluebutton/bigbluebutton/pull/15087
- https://github.com/bigbluebutton/bigbluebutton/pull/15090