{"id":"CVE-2020-5409","details":"Pivotal Concourse, most versions prior to 6.0.0, allows redirects to untrusted websites in its login flow. A remote unauthenticated attacker could convince a user to click on a link using the OAuth redirect link with an untrusted website and gain access to that user's access token in Concourse. (This issue is similar to, but distinct from, CVE-2018-15798.)","aliases":["BIT-concourse-2020-5409"],"modified":"2026-03-13T00:42:51.790639Z","published":"2020-05-14T00:15:11.603Z","references":[{"type":"ADVISORY","url":"https://tanzu.vmware.com/security/cve-2020-5409"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/concourse/concourse","events":[{"introduced":"0"},{"fixed":"3162bc170c4471aa900f6c413dad373203d7f0b8"},{"introduced":"5ffc88a8d5c7c82a225ab11997ddfc1fde230e18"},{"fixed":"31c83d0a1b320c885f036fecc853effa31b864c5"},{"introduced":"f2859f7ef1d88aa328bbf31b3ddb632a533660bb"},{"fixed":"324c3af716013b13eb9780d108810d2816960139"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"5.2.8"},{"introduced":"5.3.0"},{"fixed":"5.5.10"},{"introduced":"5.6.0"},{"fixed":"5.8.1"}]}}],"versions":["v5.3.0","v5.4.0","v5.5.0","v5.5.1","v5.5.3","v5.5.4","v5.5.5","v5.5.6","v5.5.7","v5.5.8","v5.5.9","v5.6.0","v5.7.0","v5.8.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-5409.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}