PT-2026-21960

CVE-2026-27736

Published

2026-02-25

Updated

2026-03-05

Description by

CVSS 3.1

6.1

Medium

MetricsAV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions BigBlueButton versions prior to 3.0.20

Description BigBlueButton is a virtual classroom platform. Versions of the 3.x branch before 3.0.20 contain an Open Redirect issue. The errorRedirectUrl string is not properly validated, and is directly used in the respondWithRedirect function. This allows for redirection to a malicious URL.

Recommendations Update to version 3.0.20 or later.

Exploitability

Exploit

Fix

Impacts

Researchers

Vendors

Affected products

Weakness enumeration

CWE-601: URL Redirection to Untrusted Site (\'Open Redirect\')

Related identifiers

CVE-2026-27736