CVE-2025-55200

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 v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/bigbluebutton/bbb-pads/pull/67	Issue Tracking Product
https://github.com/bigbluebutton/bbb-pads/releases/tag/v1.5.4	Release Notes
https://github.com/bigbluebutton/bigbluebutton/pull/23693	Issue Tracking Patch
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-9jv9-cjrm-grj2	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-10-09 19:15

Updated : 2025-10-20 15:30

NVD link : CVE-2025-55200

Mitre link : CVE-2025-55200

CVE.ORG link : CVE-2025-55200

JSON object : View

Products Affected

bigbluebutton

bigbluebutton

CWE

CWE-79

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

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