What is CVE-2020-12113?

CVE-2020-12113 is a medium-severity vulnerability in Bigbluebutton, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-04-23.

How severe is CVE-2020-12113?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Bigbluebutton

CVE-2020-12113

BigBlueButton before 2.2.4 allows XSS via closed captions because dangerouslySetInnerHTML in React is used.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-04-23 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.009 (59.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Bigbluebutton

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/bigbluebutton/bigbluebutton/releases/tag/v2.2.4 (Third Party Advisory)
github.com/bigbluebutton/bigbluebutton/pull/9017 (Patch, Third Party Advisory)
www.sakshamanand.com/cve-2020-12113/

Frequently asked questions

What is CVE-2020-12113?: CVE-2020-12113 is a medium-severity vulnerability in Bigbluebutton, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-04-23.
How severe is CVE-2020-12113?: Medium severity. CVSS v3 base score is 6.1 out of 10.