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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.

PUBLISHED Reserved 2025-08-08 | Published 2025-10-09 | Updated 2025-10-09 | Assigner GitHub_M




HIGH: 7.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

< 3.0.13
affected

References

github.com/...button/security/advisories/GHSA-9jv9-cjrm-grj2

github.com/bigbluebutton/bbb-pads/pull/67

github.com/bigbluebutton/bigbluebutton/pull/23693

github.com/bigbluebutton/bbb-pads/releases/tag/v1.5.4

cve.org (CVE-2025-55200)

nvd.nist.gov (CVE-2025-55200)

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