What’s Vulnerable › Vulnerabilities

CVE-2022-26497

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-06-02 · updated 2026-06-17
• Weakness: CWE-79

Description

BigBlueButton Greenlight 2.11.1 allows XSS. A threat actor could have a username containing a JavaScript payload. The payload gets executed in the browser of the victim in the "Share room access" dialog if the victim has shared access to the particular room with the attacker previously.

Affected products

• bigbluebutton greenlight: 2.11.1

References

• http://packetstormsecurity.com/files/172143/Shannon-Baseband-acfg-pcfg-SDP-Attribute-Memory-Corruption.html
• https://github.com/bigbluebutton/greenlight/blob/master/app/assets/javascripts/room.js#L352
• https://www.mgm-sp.com/en/cve-2022-26497-bigbluebutton-greenlight-xss/
• http://packetstormsecurity.com/files/172143/Shannon-Baseband-acfg-pcfg-SDP-Attribute-Memory-Corruption.html
• https://github.com/bigbluebutton/greenlight/blob/master/app/assets/javascripts/room.js#L352
• https://www.mgm-sp.com/en/cve-2022-26497-bigbluebutton-greenlight-xss/

Get alerted when CVE-2022-26497 or the next vulnerability affects your stack