PT-2025-41453 · Unknown · Bigbluebutton

Brocked200 · Published 2025-10-09 · Updated 2025-10-20 · CVE-2025-55200

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions BigBlueButton versions prior to 3.0.13

Description BigBlueButton, an open-source virtual classroom, has a Stored Cross-Site Scripting (XSS) issue in the "Shared Notes" feature. The input location for this issue is the Username field, and the output is displayed on the "Shared Notes" page when a user with a malicious username edits content. This allows a low-privileged user to execute arbitrary JavaScript in the context of higher-privileged users, such as Admins, who open the "Shared Notes" page.

Recommendations Update to BigBlueButton version 3.0.13 or later.

Exploit

Fix

XSS

Buffer Overflow

Weakness Enumeration

CWE-79

CWE-119

Related Identifiers

BDU:2025-12792

CVE-2025-55200

GHSA-9JV9-CJRM-GRJ2

Affected Products

Bigbluebutton

References · 13

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/55xxx/CVE-2025-55200.json · Exploit
• https://github.com/bigbluebutton/bigbluebutton/pull/23693 · Patch
• https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-9jv9-cjrm-grj2 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-12792 · Security Note
• https://osv.dev/vulnerability/CVE-2025-55200 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-55200 · Security Note
• https://github.com/bigbluebutton/bbb-pads/releases/tag/v1.5.4 · Note
• https://github.com/bigbluebutton/bbb-pads/pull/67 · Note
• https://twitter.com/CveTodo/status/1976369172096442843 · Twitter Post
• https://twitter.com/CVEnew/status/1976365776312598893 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1976387141589516797 · Twitter Post
• https://github.com/Flechao1/iot-vuln/blob/main/dlink-816-b05.md · Note
• https://t.me/cveNotify/139418 · Telegram Post