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.
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Thu, 09 Oct 2025 19:15:00 +0000
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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. | |
Title | BigBlueButton vulnerable to Stored XSS via name of user at Shared Notes | |
Weaknesses | CWE-79 | |
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Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-10-09T19:08:17.415Z
Reserved: 2025-08-08T21:55:07.965Z
Link: CVE-2025-55200

Updated: 2025-10-09T19:08:14.974Z

Status : Received
Published: 2025-10-09T19:15:43.663
Modified: 2025-10-09T19:15:43.663
Link: CVE-2025-55200

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