{"cve":"CVE-2020-5415","nvd":{"published":"2020-08-12T17:15:12.633","modified":"2026-06-17T03:21:27.147","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N","score":10.0},"cwes":["CWE-290"],"references":["https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj","https://tanzu.vmware.com/security/cve-2020-5415","https://github.com/concourse/concourse/security/advisories/GHSA-627p-rr78-99rj","https://tanzu.vmware.com/security/cve-2020-5415"],"products":["pivotal_software:concourse"],"source":"nvd","synced_at":"2026-10-19T21:09:20.498348299+00:00"},"epss":{"cve":"CVE-2020-5415","score":0.01217,"percentile":0.68621,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-627p-rr78-99rj","url":"https://osv.dev/vulnerability/GHSA-627p-rr78-99rj","summary":"GitLab auth uses full name instead of username as user ID, allowing impersonation","modified":"2026-07-08T06:00:52.559476287Z","packages":[{"ecosystem":"Go","name":"github.com/concourse/concourse","purl":"pkg:golang/github.com/concourse/concourse","ranges":[">=6.4.0 <6.4.1"],"fixed":["6.4.1"]},{"ecosystem":"Go","name":"github.com/concourse/concourse","purl":"pkg:golang/github.com/concourse/concourse","ranges":[">=1.6.1 <6.3.1"],"fixed":["6.3.1"]},{"ecosystem":"Go","name":"github.com/concourse/dex","purl":"pkg:golang/github.com/concourse/dex","ranges":[">=6.4.0 <6.4.1"],"fixed":["6.4.1"]},{"ecosystem":"Go","name":"github.com/concourse/dex","purl":"pkg:golang/github.com/concourse/dex","ranges":[">=0.0.0 <6.3.1"],"fixed":["6.3.1"]},{"ecosystem":"Go","name":"github.com/concourse/dex","purl":"pkg:golang/github.com/concourse/dex","ranges":["<0.0.0-20200730150203-821b48abfd88"],"fixed":["0.0.0-20200730150203-821b48abfd88"]},{"ecosystem":"Go","name":"github.com/concourse/concourse","purl":"pkg:golang/github.com/concourse/concourse","ranges":["<0.0.0-20200730151558-b00d1c8d8576"],"fixed":["0.0.0-20200730151558-b00d1c8d8576"]},{"ecosystem":"Go","name":"github.com/concourse/concourse","purl":"pkg:golang/github.com/concourse/concourse","ranges":[">=0.0.0 <1.6.1-0.20200730151558-b00d1c8d8576"],"fixed":["1.6.1-0.20200730151558-b00d1c8d8576"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}