Unrated severityNVD Advisory· Published Oct 9, 2025· Updated Oct 9, 2025
BigBlueButton vulnerable to Stored XSS via name of user at Shared Notes
CVE-2025-55200
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.
Affected products
1- Range: < 3.0.13
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- github.com/bigbluebutton/bbb-pads/pull/67mitrex_refsource_MISC
- github.com/bigbluebutton/bbb-pads/releases/tag/v1.5.4mitrex_refsource_MISC
- github.com/bigbluebutton/bigbluebutton/pull/23693mitrex_refsource_MISC
- github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-9jv9-cjrm-grj2mitrex_refsource_CONFIRM
News mentions
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