BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are subject to Ineffective user bans. The attacker could register multiple users, and join the meeting with one of them. When that user is banned, they could still join the meeting with the remaining registered users from the same extId. This issue has been fixed by improving permissions such that banning a user removes all users related to their extId, including registered users that have not joined the meeting. This issue is patched in versions 2.4-rc-6 and 2.5-alpha-1. There are no workarounds.
CVE-2022-41961
This medium-severity CVE scores 4.3 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 80% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.3
- EG Score
- 4.3(medium)
- EG Risk
- 19(Track)EG Risk 19/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity43% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 20.2%
- KEV
- Not listed
Published
December 16, 2022
Last Modified
November 21, 2024
References (6)
- security-advisories@githubhttps://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6
- security-advisories@githubhttps://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1
- security-advisories@githubhttps://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg
- af854a3a-2127-422b-91ae-364da2661108https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6
- af854a3a-2127-422b-91ae-364da2661108https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1
- af854a3a-2127-422b-91ae-364da2661108https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 42× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-23 02:14 UTCEG score recompute
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Frequently asked(5)
What is CVE-2022-41961?
When was CVE-2022-41961 disclosed?
Is CVE-2022-41961 actively exploited?
What is the CVSS score of CVE-2022-41961?
How do I remediate CVE-2022-41961?
Dependency Blast Radius
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