What’s Vulnerable › Vulnerabilities

CVE-2022-27238

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-06-24 · updated 2026-06-17
• Weakness: CWE-79

Description

BigBlueButton version 2.4.7 (or earlier) is vulnerable to stored Cross-Site Scripting (XSS) in the private chat functionality. A threat actor could inject JavaScript payload in his/her username. The payload gets executed in the browser of the victim each time the attacker sends a private message to the victim or when notification about the attacker leaving room is displayed.

Affected products

• bigbluebutton: through 2.4.7

References

• https://www.mgm-sp.com/en/cve-2022-27238-bigbluebutton-xss/
• https://www.mgm-sp.com/en/cve-2022-27238-bigbluebutton-xss/

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