{"cve":"CVE-2020-11576","nvd":{"published":"2020-04-08T18:15:15.323","modified":"2026-06-17T02:50:24.777","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-203"],"references":["https://github.com/argoproj/argo-cd/commit/35a7350b7444bcaf53ee0bb11b9d8e3ae4b717a1","https://github.com/argoproj/argo-cd/pull/3215","https://www.soluble.ai/blog/argo-cves-2020","https://github.com/argoproj/argo-cd/commit/35a7350b7444bcaf53ee0bb11b9d8e3ae4b717a1","https://github.com/argoproj/argo-cd/pull/3215"],"products":["argoproj:argo_cd"],"source":"nvd","synced_at":"2026-10-19T21:03:08.679916934+00:00"},"epss":{"cve":"CVE-2020-11576","score":0.01973,"percentile":0.80434,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-vj54-cjrx-x696","url":"https://osv.dev/vulnerability/GHSA-vj54-cjrx-x696","summary":"Observable Discrepancy in Argo","modified":"2024-08-21T15:58:41.433420Z","packages":[{"ecosystem":"Go","name":"github.com/argoproj/argo-cd","purl":"pkg:golang/github.com/argoproj/argo-cd","ranges":[">=1.5.0 <1.5.1"],"fixed":["1.5.1"]}]},{"id":"GO-2022-0882","url":"https://osv.dev/vulnerability/GO-2022-0882","summary":"Observable Discrepancy in Argo in github.com/argoproj/argo-cd","modified":"2026-03-03T04:52:19.877597Z","packages":[{"ecosystem":"Go","name":"github.com/argoproj/argo-cd","purl":"pkg:golang/github.com/argoproj/argo-cd","ranges":[">=1.5.0 <1.5.1"],"fixed":["1.5.1"]}]}],"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."]}