Vulnerability Description
BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.13, the "Shared Notes" feature contains a Stored Cross-Site Scripting (XSS) vulnerability with the input location being the "Username" field and the output location on the "Shared Notes" page, when a user with a malicious username is editing content. This vulnerability allows a low-privileged user to execute arbitrary JavaScript in the context of higher-privileged users (e.g., Admins) who open the Shared Notes page. Version 3.0.13 fixes the issue.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Bigbluebutton | Bigbluebutton | < 3.0.13 |
Related Weaknesses (CWE)
References
- https://github.com/bigbluebutton/bbb-pads/pull/67Issue TrackingProduct
- https://github.com/bigbluebutton/bbb-pads/releases/tag/v1.5.4Release Notes
- https://github.com/bigbluebutton/bigbluebutton/pull/23693Issue TrackingPatch
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-9jv9-cjrVendor Advisory
FAQ
What is CVE-2025-55200?
CVE-2025-55200 is a vulnerability with a CVSS score of 7.1 (HIGH). BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.13, the "Shared Notes" feature contains a Stored Cross-Site Scripting (XSS) vulnerability with the input location being the ...
How severe is CVE-2025-55200?
CVE-2025-55200 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-55200?
Check the references section above for vendor advisories and patch information. Affected products include: Bigbluebutton Bigbluebutton.