PT-2025-41490 · Unknown · Bigbluebutton

Brocked200 + 1 · Published 2025-10-09 · Updated 2025-10-20 · CVE-2025-61602

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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

Description BigBlueButton is an open-source virtual classroom. A denial-of-service (DoS) condition exists in versions prior to 3.0.13. An authenticated user can disrupt chat functionality for all meeting participants by sending a malformed reactionEmojiId within the chatSendMessageReaction GraphQL mutation. The vulnerability resides in the handling of the reactionEmojiId parameter.

Recommendations Update to version 3.0.13 or later.

Exploit

Fix

DoS

Weakness Enumeration

CWE-703

Related Identifiers

CVE-2025-61602

GHSA-45J2-M26C-3PCM

Affected Products

Bigbluebutton

References · 9

• 🔥 https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-45j2-m26c-3pcm · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/61xxx/CVE-2025-61602.json · Exploit
• https://github.com/bigbluebutton/bigbluebutton/pull/23651 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-61602 · Security Note
• https://osv.dev/vulnerability/CVE-2025-61602 · Vendor Advisory
• https://twitter.com/CveTodo/status/1976408365925339146 · Twitter Post
• https://t.me/cveNotify/139420 · Telegram Post
• https://twitter.com/CVEnew/status/1976396266587422988 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1976504871634227318 · Twitter Post