Medium severity · published Oct 22, 2020
CVE-2020-27642
A cross-site scripting (XSS) vulnerability exists in the 'merge account' functionality in admins.js in BigBlueButton Greenlight 2.7.6
6.1
CVSS
0.8%
EPSS
No
On KEV
Description
A cross-site scripting (XSS) vulnerability exists in the 'merge account' functionality in admins.js in BigBlueButton Greenlight 2.7.6.
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)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GR
Greenlight · Bigbluebutton
2.7.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27642
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27642
Patch
https://github.com/bigbluebutton/greenlight/pull/2214
More from Greenlight
8.8
CVE-2020-26163
BigBlueButton Greenlight before 2.5.6 allows HTTP header (Host and Origin) attacks, which can result in Account Takeover if a victim follows a spoofed password-reset link
6.1
CVE-2022-36029
BigBlueButton Greenlight Open Redirect vulnerability
6.1
CVE-2022-36028
BigBlueButton Greenlight Open Redirect vulnerability
5.4
CVE-2022-26497
BigBlueButton Greenlight 2.11.1 allows XSS
5.3
CVE-2022-31039
Greenlight is a simple front-end interface for your BigBlueButton server