CVE-2022-31065

Name: CVE-2022-31065
Creator: NVD / NIST
Published: 2022-06-27T20:15:08.65+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.72%

Last modified Jun 17, 2026

CVE-2022-31065 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. BigBlueButton is an open source web conferencing system. In affected versions an attacker can embed malicious JS in their username and have it executed on the victim's client. EPSS estimates a 0.72% chance of exploitation in the next 30 days.

Description

BigBlueButton is an open source web conferencing system. In affected versions an attacker can embed malicious JS in their username and have it executed on the victim's client. When a user receives a private chat from the attacker (whose username contains malicious JavaScript), the script gets executed. Additionally when the victim receives a notification that the attacker has left the session. This issue has been patched in version 2.4.8 and 2.5.0. There are no known workarounds for this issue.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.72%

49.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions	Update
Bigbluebutton	Bigbluebutton	>= 2.4, < 2.4.8	—
Bigbluebutton	Bigbluebutton	2.3.0	—
Bigbluebutton	Bigbluebutton	2.4.9	—
Bigbluebutton	Bigbluebutton	2.5	Alpha1

References

https://github.com/bigbluebutton/bigbluebutton/pull/15087Patch, Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/pull/15090Patch, Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-8m2p-7qv3-qff7Patch, Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/pull/15087Patch, Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/pull/15090Patch, Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-8m2p-7qv3-qff7Patch, Third Party Advisory

Timeline

Published: Jun 27, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-31065?

How severe is CVE-2022-31065?

CVE-2022-31065 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.72% probability of exploitation in the next 30 days.

How do I fix CVE-2022-31065?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-31065?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST