CVE-2022-31064
Users in meetings with private chat enabled are vulnerable to a cross site scripting attack in affected versions.
Does this matter?
Lower severity and a low EPSS score (1.27%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.27% probability · 70th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- bigbluebutton/bigbluebutton
- Source
- security-advisories@github.com
EPSS 1.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.