CVE-2020-29043 json
An issue was discovered in BigBlueButton through 2.2.29.
published 2020-11-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-21425
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 73%
- public exploits
- 0
- none known
Summary
An issue was discovered in BigBlueButton through 2.2.29. When at attacker is able to view an account_activations/edit?token= URI, the attacker can create an approved user account associated with an email address that has an arbitrary domain name.
Exploit prediction
1.45% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- cxsecurity.com https://cxsecurity.com/issue/WLB-2020110211 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
cxsecurity.com
/issue/WLB-2020110211
exploit, third-party-advisory
-
github.com
/bigbluebutton/bigbluebutton/releases
release-notes, third-party-advisory
-
packetstormsecurity.com
/files/160239/BigBlueButton-2.2.29-E-mail-Validation-Bypass.html
third-party-advisory
Sources
- CVE List CVE-2020-29043
- NVD CVE-2020-29043
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