CVE-2020-29043

Name: CVE-2020-29043
Creator: NVD / NIST
Published: 2020-11-26T18:15:10.633+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.43%

Last modified Jun 17, 2026

CVE-2020-29043 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.43% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

1.43%

69.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Bigbluebutton	Bigbluebutton	<= 2.2.29

References

http://packetstormsecurity.com/files/160239/BigBlueButton-2.2.29-E-mail-Validation-Bypass.htmlThird Party Advisory
https://cxsecurity.com/issue/WLB-2020110211Exploit, Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/releasesRelease Notes, Third Party Advisory
http://packetstormsecurity.com/files/160239/BigBlueButton-2.2.29-E-mail-Validation-Bypass.htmlThird Party Advisory
https://cxsecurity.com/issue/WLB-2020110211Exploit, Third Party Advisory
https://github.com/bigbluebutton/bigbluebutton/releasesRelease Notes, Third Party Advisory

Timeline

Published: Nov 26, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-29043?

How severe is CVE-2020-29043?

CVE-2020-29043 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.43% probability of exploitation in the next 30 days.

How do I fix CVE-2020-29043?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-29043?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST