7.1

CVE-2025-55200

Medienbericht

BigBlueButton vulnerable to Stored XSS via name of user at Shared Notes

Stored XSS via name of user at Shared Notes

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.
Mögliche Gegenmaßnahme
Server: We recommend upgrading to a patched version of BigBlueButton.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
BigBlueButton ≫ BigBlueButton Version < 3.0.13
VulnDex Vulnerability Enrichment
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Weitere Schwachstelleninformationen
SystemBigBlueButton
≫
Produkt Server
Version < 3.0.13
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.22% 0.125
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.4 2.3 2.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
security-advisories@github.com 7.1 2.8 4.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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VulnDex Intel
Media Report
13.10.2025 12:27
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-9jv9-cjrm-grj2
Vendor Advisory
https://github.com/bigbluebutton/bbb-pads/pull/67
Product
Issue Tracking
https://github.com/bigbluebutton/bigbluebutton/pull/23693
Patch
Issue Tracking
https://github.com/bigbluebutton/bbb-pads/releases/tag/v1.5.4
Release Notes
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-9jv9-cjrm-grj2
Third Party Advisory