XSS in Bigbluebutton

CVE-2021-4143

Cross-site Scripting (XSS) - Generic in GitHub repository bigbluebutton/bigbluebutton prior to 2.4.0.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.009 (55.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Bigbluebutton
Bigbluebutton Bigbluebutton/bigbluebutton — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security@huntr.dev (x_refsource_CONFIRM, Exploit, Patch, Third Party Advisory)
security@huntr.dev (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-4143?: CVE-2021-4143 is a medium-severity vulnerability in Bigbluebutton, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-01-19.
How severe is CVE-2021-4143?: Medium severity. CVSS v3 base score is 6.1 out of 10.