Medium severity · published Jan 19, 2022
CVE-2021-4143
Cross-site Scripting (XSS) - Generic in bigbluebutton/bigbluebutton
6.1
CVSS
0.9%
EPSS
No
On KEV
Description
Cross-site Scripting (XSS) - Generic in GitHub repository bigbluebutton/bigbluebutton prior to 2.4.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BI
bigbluebutton/bigbluebutton · bigbluebutton
before 2.4.0 · source: vendor
BI
Bigbluebutton · Bigbluebutton
before 2.4.0 · source: NVD