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CVE-2026-46682— BigBlueButton: Blind SQL Injection AUTH (Moderator)

Quick assessment

Affected
bigbluebutton bigbluebutton
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

BigBlueButton 是一款开源的虚拟教室平台。在 3.0.23 版本之前，BigBlueButton 存在安全漏洞，允许经过身份验证的管理员通过 方法中使用的 和 参数注入 SQL 语句。该方法在文件 中实现，其将这两个值直接插值到关于分组房间可见性的数据库查询中，从而导致攻击者可以在应用程序数据库上执行任意 SQL 语句。该问题已在 3.0.23 版本中得到修复。

CVSS 8.5 · High EPSS 0.33% · P26

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
bigbluebutton bigbluebutton < 3.0.23 affected
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I. Basic Information for CVE-2026-46682

Vulnerability Information
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Vulnerability Title
BigBlueButton: Blind SQL Injection AUTH (Moderator)
Source: CVE Program / CVE List V5
Vulnerability Description
BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton allowed authenticated moderators to inject SQL through the meetingId and userId values used by refreshBreakoutRoomsVisibleForUsers in akka-bbb-apps/src/main/scala/org/bigbluebutton/core/db/BreakoutRoomUserDAO.scala. The method interpolated those values into breakout room visibility queries, allowing arbitrary SQL execution against the application database. This issue is fixed in version 3.0.23.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
bigbluebutton bigbluebutton < 3.0.23 -

II. Public POCs for CVE-2026-46682

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 9352 chars
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III. Intelligence Information for CVE-2026-46682

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Vendor Advisories for CVE-2026-46682 (1)

Vendor Pages for CVE-2026-46682 (1)

Same Patch Batch · bigbluebutton · 2026-08-20 · 4 CVEs total

CVE-2026-46355 7.1 HIGH BigBlueButton: Unauthenticated Session Hijack via Exposed /bigbluebutton/api/handleJoinExi
CVE-2026-55491 5.4 MEDIUM BigBlueButton: Stored XSS in Screenshare Recording Playback via Unescaped Meeting Name
CVE-2026-55489 4.9 MEDIUM BigBlueButton: IDOR on BBB through /api/graphql via POST parameter "presentationId" leads

IV. Related Vulnerabilities

Same product: bigbluebutton
Same vendor: bigbluebutton
Same weakness: CWE-89

V. Comments for CVE-2026-46682

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