{"id":"CVE-2020-11576","aliases":["BIT-argo-cd-2020-11576","GHSA-vj54-cjrx-x696","GO-2022-0882"],"url":"https://o3.security/vulnerability/CVE-2020-11576","summary":"Observable Discrepancy in Argo","details":"Fixed in v1.5.1, Argo version v1.5.0 was vulnerable to a user-enumeration vulnerability which allowed attackers to determine the usernames of valid (non-SSO) accounts because /api/v1/session returned 401 for an existing username and 404 otherwise.","published":"2020-04-08T18:15:15.323Z","modified":"2026-08-07T15:11:31.456529Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/argoproj/argo-cd","fixedVersion":"1.5.1"}],"fix":{"url":"https://github.com/argoproj/argo-cd/commit/35a7350b7444bcaf53ee0bb11b9d8e3ae4b717a1","label":"argoproj/argo-cd@35a7350"},"references":[{"type":"ADVISORY","url":"https://www.soluble.ai/blog/argo-cves-2020"},{"type":"FIX","url":"https://github.com/argoproj/argo-cd/commit/35a7350b7444bcaf53ee0bb11b9d8e3ae4b717a1"},{"type":"FIX","url":"https://github.com/argoproj/argo-cd/pull/3215"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T15:11:31.456529Z"}}