{"id":"CVE-2020-8553","aliases":["EUVD-2022-4162","GHSA-hhpm-74pm-hf35"],"status":"published","title":"Kubernetes ingress-nginx Compromise of auth via subset/superset namespace names","description":"The Kubernetes ingress-nginx component prior to version 0.28.0 allows a user with the ability to create namespaces and to read and create ingress objects to overwrite the password file of another ingress which uses nginx.ingress.kubernetes.io/auth-type: basic and which has a hyphenated namespace or secret name.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00894,"percentile":0.59739,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-610","CWE-73"],"published":"2020-07-29T14:53:32Z","modified":"2026-08-07T08:12:13Z","fixes":[{"ecosystem":"Go","package":"k8s.io/ingress-nginx","fixed_in":["0.28.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"k8s.io/ingress-nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.28.0"}]}]},{"source":"osv","ecosystem":"Go","package":"k8s.io/ingress-nginx","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.28.0"}]}]}],"products":[{"vendor":"kubernetes","product":"ingress-nginx"}],"references":[{"url":"https://github.com/kubernetes/ingress-nginx/issues/5126","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8553","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hhpm-74pm-hf35"},{"url":"https://github.com/kubernetes/ingress-nginx","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-8553","title":"Kubernetes ingress-nginx Compromise of auth via subset/superset namespace names","description":"The Kubernetes ingress-nginx component prior to version 0.28.0 allows a user with the ability to create namespaces and to read and create ingress objects to overwrite the password file of another ingress which uses nginx.ingress.kubernetes.io/auth-type: basic and which has a hyphenated namespace or secret name.","status":"published","published":"2020-07-29T14:53:32Z","modified":"2024-08-04T10:03:46.369Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T14:35:50.88562Z"}],"euvd":[{"id":"EUVD-2022-4162","description":"The Kubernetes ingress-nginx component prior to version 0.28.0 allows a user with the ability to create namespaces and to read and create ingress objects to overwrite the password file of another ingress which uses nginx.ingress.kubernetes.io/auth-type: basic and which has a hyphenated namespace or secret name.","status":"published","published":"2020-07-29T14:53:32Z","modified":"2024-08-04T10:03:46Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-03T03:07:56.602123Z"}],"ghsa":[{"id":"GHSA-hhpm-74pm-hf35","title":"ingress-nginx component for Kubernetes allows file overwrite","description":"The Kubernetes ingress-nginx component prior to version 0.28.0 allows a user with the ability to create namespaces and to read and create ingress objects to overwrite the password file of another ingress which uses nginx.ingress.kubernetes.io/auth-type: basic and which has a hyphenated namespace or secret name.","status":"published","published":"2022-05-24T17:24:40Z","modified":"2023-08-22T14:35:46Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"cwes":["CWE-73","CWE-610"],"updated_at":"2026-11-02T14:37:00.074932Z"}],"nvd":[{"id":"CVE-2020-8553","description":"The Kubernetes ingress-nginx component prior to version 0.28.0 allows a user with the ability to create namespaces and to read and create ingress objects to overwrite the password file of another ingress which uses nginx.ingress.kubernetes.io/auth-type: basic and which has a hyphenated namespace or secret name.","status":"published","published":"2020-07-29T15:15:13.45Z","modified":"2026-06-17T03:26:32.34Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.9,"vector":"AV:N/AC:M/Au:S/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-73","CWE-610"],"updated_at":"2026-11-02T14:06:10.994748Z"}],"osv":[{"id":"GHSA-hhpm-74pm-hf35","title":"ingress-nginx component for Kubernetes allows file overwrite","description":"The Kubernetes ingress-nginx component prior to version 0.28.0 allows a user with the ability to create namespaces and to read and create ingress objects to overwrite the password file of another ingress which uses nginx.ingress.kubernetes.io/auth-type: basic and which has a hyphenated namespace or secret name.","status":"published","published":"2022-05-24T17:24:40Z","modified":"2026-08-07T08:12:13.166392562Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"cwes":["CWE-610","CWE-73"],"updated_at":"2026-11-02T15:46:49.28217Z"}]}}