CVE-2022-26497
MEDIUMCVSS 5.4/10EPSS 0.80%
Last modified
CVE-2022-26497 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. BigBlueButton Greenlight 2.11.1 allows XSS. A threat actor could have a username containing a JavaScript payload. EPSS estimates a 0.80% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Bigbluebutton | Greenlight | 2.11.1 |
References
- https://github.com/bigbluebutton/greenlight/blob/master/app/assets/javascripts/room.js#L352Exploit, Third Party Advisory
- https://www.mgm-sp.com/en/cve-2022-26497-bigbluebutton-greenlight-xss/Patch, Third Party Advisory
- https://github.com/bigbluebutton/greenlight/blob/master/app/assets/javascripts/room.js#L352Exploit, Third Party Advisory
- https://www.mgm-sp.com/en/cve-2022-26497-bigbluebutton-greenlight-xss/Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-26497?
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.
How severe is CVE-2022-26497?
CVE-2022-26497 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.80% probability of exploitation in the next 30 days.
How do I fix CVE-2022-26497?
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-2022-26497?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST