CVE-2020-5415: Pivotal Software Concourse

Critical severity, CVSS 10.0. EPSS: 1.2% chance of exploitation in the next 30 days.

Concourse, versions prior to 6.3.1 and 6.4.1, in installations which use the GitLab auth connector, is vulnerable to identity spoofing by way of configuring a GitLab account with the same full name as another user who is granted access to a Concourse team. GitLab groups do not have this vulnerability, so GitLab users may be moved into groups which are then configured in the Concourse team.

Affected products

• Pivotal Software Concourse: before 6.3.1 (fixed in 6.3.1); from 6.4.0, before 6.4.1 (fixed in 6.4.1)

Published 2020-08-12. Last modified 2026-06-17.