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TI-2022-13110 Aliases CVE-2022-31065

Cross site scripting vulnerability for private chat in bigbluebutton

Priority LOW 30CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00792 56th percentileScored 2026-11-07
Fix Fixed bigbluebutton (bigbluebutton): 2.4.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
bigbluebuttonbigbluebuttonbefore 2.4.82.4.8Patch availableCNA
  • bigbluebutton Vendorbigbluebutton Affected before 2.4.8 Fixed in 2.4.8 Patch available CNA

CPE configurations NVD · 15

CPEVersionsRoleVendor
cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*2.4 to before 2.4.8Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.0:*:*:*:*:*:*:*2.3.0Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.4.9:*:*:*:*:*:*:*2.4.9Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha1:*:*:*:*:*:*2.5 alpha1Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha2:*:*:*:*:*:*2.5 alpha2Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha3:*:*:*:*:*:*2.5 alpha3Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha4:*:*:*:*:*:*2.5 alpha4Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha5:*:*:*:*:*:*2.5 alpha5Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha6:*:*:*:*:*:*2.5 alpha6Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:beta1:*:*:*:*:*:*2.5 beta1Vulnerablebigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:* Versions 2.4 to before 2.4.8 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.0:*:*:*:*:*:*:* Versions 2.3.0 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.4.9:*:*:*:*:*:*:* Versions 2.4.9 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha1:*:*:*:*:*:* Versions 2.5 alpha1 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha2:*:*:*:*:*:* Versions 2.5 alpha2 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha3:*:*:*:*:*:* Versions 2.5 alpha3 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha4:*:*:*:*:*:* Versions 2.5 alpha4 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha5:*:*:*:*:*:* Versions 2.5 alpha5 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:alpha6:*:*:*:*:*:* Versions 2.5 alpha6 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:beta1:*:*:*:*:*:* Versions 2.5 beta1 Vulnerable ·bigbluebutton
Show 5 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:beta2:*:*:*:*:*:*2.5 beta2Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:rc.1:*:*:*:*:*:*2.5 rc.1Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:rc.2:*:*:*:*:*:*2.5 rc.2Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:rc.3:*:*:*:*:*:*2.5 rc.3Vulnerablebigbluebutton
cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:rc.4:*:*:*:*:*:*2.5 rc.4Vulnerablebigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:beta2:*:*:*:*:*:* Versions 2.5 beta2 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:rc.1:*:*:*:*:*:* Versions 2.5 rc.1 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:rc.2:*:*:*:*:*:* Versions 2.5 rc.2 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:rc.3:*:*:*:*:*:* Versions 2.5 rc.3 Vulnerable ·bigbluebutton
  • cpe:2.3:a:bigbluebutton:bigbluebutton:2.5:rc.4:*:*:*:*:*:* Versions 2.5 rc.4 Vulnerable ·bigbluebutton

Remediation

  • Fix · CNA bigbluebutton (bigbluebutton) Fixed in 2.4.8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-31065

References

Patch 3

  • TI-2026-21873 BigBlueButton: Exposed ClamAV port enables Denial of Service CVSS 3.1HIGH 8.2
  • TI-2025-38047 BigBlueButton vulnerable to Chat DoS via invalid reactionEmojiId CVSS 3.1HIGH 7.5
  • TI-2025-38046 BigBlueButton vulnerable to DoS via PollSubmitVote GraphQL mutation CVSS 3.1HIGH 7.5
  • TI-2022-13109 Cross site scripting in username that will trigger by sending chat CVSS 3.1MEDIUM 6.5
  • TI-2020-09954 BigBlueButton before 2.2.6 allows remote attackers to read arbitrary files because the… CVSS 3.1CRITICAL 9.8
  • TI-2020-16722 BigBlueButton through 2.2.28 uses Ghostscript for processing of uploaded EPS documents… CVSS 3.1CRITICAL 9.8
See all 48 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences