CVE-2020-5415

Name: CVE-2020-5415
Creator: NVD / NIST
Published: 2020-08-12T17:15:12.633+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 10/10EPSS 1.22%

Last modified Jun 17, 2026

CVE-2020-5415 is a critical-severity vulnerability rated 10/10 on the CVSS scale. 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.. EPSS estimates a 1.22% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

10/10

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

EPSS Probability

1.22%

64.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Pivotal Software	Concourse	< 6.3.1
Pivotal Software	Concourse	>= 6.4.0, < 6.4.1

References

https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rjPatch, Third Party Advisory
https://tanzu.vmware.com/security/cve-2020-5415Third Party Advisory
https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rjPatch, Third Party Advisory
https://tanzu.vmware.com/security/cve-2020-5415Third Party Advisory

Timeline

Published: Aug 12, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-5415?

How severe is CVE-2020-5415?

CVE-2020-5415 has a CVSS score of 10/10 (CRITICAL severity). The EPSS model estimates a 1.22% probability of exploitation in the next 30 days.

How do I fix CVE-2020-5415?

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-2020-5415?

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

Scan your code now

Source: NVD / NIST