CVE-2022-31064

Name: CVE-2022-31064
Creator: NVD / NIST
Published: 2022-06-27T20:15:08.587+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 1.18%

Last modified Jun 17, 2026

CVE-2022-31064 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. BigBlueButton is an open source web conferencing system. Users in meetings with private chat enabled are vulnerable to a cross site scripting attack in affected versions. EPSS estimates a 1.18% chance of exploitation in the next 30 days.

Description

BigBlueButton is an open source web conferencing system. Users in meetings with private chat enabled are vulnerable to a cross site scripting attack in affected versions. The attack occurs when the attacker (with xss in the name) starts a chat. in the victim's client the JavaScript will be executed. This issue has been addressed in version 2.4.8 and 2.5.0. There are no known workarounds for this issue.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

1.18%

63.7th 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

http://packetstormsecurity.com/files/167682/BigBlueButton-2.3-2.4.7-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2022/Jun/52Exploit, Mailing List, Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/pull/15067Patch, Release Notes, Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/pull/15090Patch, Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-hwv2-5pf5-hr87Patch, Third Party Advisory
https://pentests.nl/pentest-blog/stored-xss-in-bigbluebutton/Exploit, Third Party Advisory
http://packetstormsecurity.com/files/167682/BigBlueButton-2.3-2.4.7-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2022/Jun/52Exploit, Mailing List, Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/pull/15067Patch, Release Notes, Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/pull/15090Patch, Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-hwv2-5pf5-hr87Patch, Third Party Advisory
https://pentests.nl/pentest-blog/stored-xss-in-bigbluebutton/Exploit, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2022-31064?

How severe is CVE-2022-31064?

CVE-2022-31064 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 1.18% probability of exploitation in the next 30 days.

How do I fix CVE-2022-31064?

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-2022-31064?

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

Scan your code now

Source: NVD / NIST