CVE-2022-31039Network attack vector

Authenticated room-settings disclosure via missing ownership check

Published Jun 27, 2022 · Updated Apr 23, 2025

Incorrect authorization in BigBlueButton Greenlight before 2.12.6 allows remote authenticated users to view settings for any room. The room-settings request handler loads settings for an attacker-supplied room identifier without checking that the requester owns the room or is an administrator. A signed-in account and a target room identifier are sufficient; exposure is limited to the room's configuration data.

CVSS severity4.3
Medium
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in BigBlueButton Greenlight before 2.12.6 allows remote authenticated users to view settings for any room. The room-settings request handler loads settings for an attacker-supplied room identifier without checking that the requester owns the room or is an administrator. A signed-in account and a target room identifier are sufficient; exposure is limited to the room's configuration data.

The record

CVE
CVE-2022-31039
Published
Jun 27, 2022
Updated
Apr 23, 2025
Vendor
BigBlueButton Inc.
Product
Greenlight
Classifications
CWE-269, CWE-863
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.12.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BigBlueButton Inc. · Greenlightversion=< 2.12.6

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
4.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
CWE-863Incorrect Authorization

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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