Cross site scripting in username that will trigger by sending chat
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 1.2%
exploitation probability
1.2%top 34% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Affected products
bigbluebutton · bigbluebuttonReferences
http://packetstormsecurity.com/files/167682/BigBlueButton-2.3-2.4.7-Cross-Site-Scripting.htmlhttp://seclists.org/fulldisclosure/2022/Jun/52https://github.com/bigbluebutton/bigbluebutton/pull/15067https://github.com/bigbluebutton/bigbluebutton/pull/15090https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-hwv2-5pf5-hr87https://pentests.nl/pentest-blog/stored-xss-in-bigbluebutton/