CVE-2022-31064
Cross site scripting in username that will trigger by sending chat
MEDIUM 5.4EPSS 1.3%
BigBlueButton is an open source web conferencing system. Users in meetings with private chat enabled are vulnerable to a cross site scripting attack in affected versions. The attack occurs when the attacker (with xss in the name) starts a chat. in the victim's client the JavaScript will be executed. This issue has been addressed in version 2.4.8 and 2.5.0. There are no known workarounds for this issue.
- Affected
- bigbluebutton
- CVSS v3.1 NVD
- 5.4 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS v3.1 GITHUB
- 6.5 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L - CVSS v2.0 NVD
- 2.1 LOW
AV:N/AC:H/Au:S/C:N/I:P/A:N - EPSS
- 1.27% chance of exploitation in the next 30 days, 69th percentile
- Published
- 2022-06-27
- Updated
- 2025-04-22
Proof-of-concept exploits (2)
- http://packetstormsecurity.com/files/167682/BigBlueButton-2.3-2.4.7-Cross-Site-Scripting…
- http://seclists.org/fulldisclosure/2022/Jun/52
Security advisories
- bigbluebutton/bigbluebutton/pull/15067
- bigbluebutton/bigbluebutton/security/advisories/GHSA-hwv2-5pf5-hr87
- https://pentests.nl/pentest-blog/stored-xss-in-bigbluebutton