High severity7.1NVD Advisory· Published Oct 9, 2025· Updated Jun 17, 2026
CVE-2025-55200
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*range: <3.0.13
- (no CPE)range: <3.0.13
- (no CPE)range: < 3.0.13
Patches
Vulnerability mechanics
References
4- github.com/bigbluebutton/bigbluebutton/pull/23693nvdIssue TrackingPatch
- github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-9jv9-cjrm-grj2nvdVendor Advisory
- github.com/bigbluebutton/bbb-pads/pull/67nvdIssue TrackingProduct
- github.com/bigbluebutton/bbb-pads/releases/tag/v1.5.4nvdRelease Notes
News mentions
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