{"id":"CVE-2020-8138","details":"A missing check for IPv4 nested inside IPv6 in Nextcloud server \u003c 17.0.1, \u003c 16.0.7, and \u003c 15.0.14 allowed a Server-Side Request Forgery (SSRF) vulnerability when subscribing to a malicious calendar URL.","modified":"2026-04-11T19:42:21.700471Z","published":"2020-03-20T21:15:17.547Z","references":[{"type":"ADVISORY","url":"https://nextcloud.com/security/advisory/?id=NC-SA-2020-014"},{"type":"EVIDENCE","url":"https://hackerone.com/reports/736867"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nextcloud/server","events":[{"introduced":"0"},{"fixed":"dd0b38876d11d81776c9e12bdcc31142059a983e"},{"introduced":"6781f9fc7652f735a75abd869ab3e79878fceec9"},{"fixed":"afa23942a508c16dc99bf6031d522a4d9539bb3a"},{"introduced":"c937c8f1753b111086e28afa396f3abd5776b1db"},{"fixed":"8306acc940c0c8d4c0c3798b742d6ca8be3fcff0"}],"database_specific":{"cpe":"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"introduced":"0"},{"fixed":"15.0.14"},{"introduced":"16.0.0"},{"fixed":"16.0.7"},{"introduced":"17.0.0"},{"fixed":"17.0.2"}]}}],"versions":["15.0.11","16.0.4","v1.0.0beta1","v11.0.0","v11.0RC2","v12.0.0beta1","v12.0.0beta2","v12.0.0beta3","v12.0.0beta4","v13.0.0RC1","v13.0.0beta1","v13.0.0beta2","v13.0.0beta3","v13.0.0beta4","v14.0.0RC1","v14.0.0RC2","v14.0.0beta1","v14.0.0beta2","v14.0.0beta3","v14.0.0beta4","v15.0.0","v15.0.0RC1","v15.0.0RC2","v15.0.0RC3","v15.0.0beta1","v15.0.0beta2","v15.0.1","v15.0.10","v15.0.11","v15.0.11RC1","v15.0.12","v15.0.12RC1","v15.0.13","v15.0.13rc1","v15.0.14RC1","v15.0.1RC1","v15.0.1RC2","v15.0.2","v15.0.3","v15.0.3RC1","v15.0.4","v15.0.5","v15.0.5RC1","v15.0.5RC2","v15.0.6","v15.0.6RC1","v15.0.7","v15.0.8","v15.0.8RC1","v15.0.9","v15.0.9RC1","v16.0.0","v16.0.1","v16.0.1RC1","v16.0.2","v16.0.2RC1","v16.0.3","v16.0.4","v16.0.4RC1","v16.0.5","v16.0.5RC1","v16.0.6","v16.0.6rc1","v16.0.7RC1","v17.0.0","v17.0.1","v17.0.1rc1","v17.0.2RC1","v3.0","v4.0.0","v4.0.0RC","v4.0.0RC2","v4.0.0beta","v4.0.1","v4.0.4","v4.0.5","v4.0.6","v4.5.0","v4.5.0RC1","v4.5.0RC2","v4.5.0RC3","v4.5.0beta3","v4.5.0beta4","v5.0.0","v5.0.0RC1","v5.0.0RC2","v5.0.0RC3","v5.0.0alpha1","v5.0.0beta1","v5.0.0beta2","v6.0.0RC1","v6.0.0RC2","v6.0.0alpha2","v6.0.0beta2","v6.0.0beta3","v6.0.0beta4","v6.0.0beta5","v7.0.0alpha2","v7.0.0beta1","v8.0.0","v8.0.0RC1","v8.0.0RC2","v8.0.0alpha1","v8.0.0alpha2","v8.0.0beta1","v8.0.0beta2","v8.1.0alpha1","v8.1.0alpha2","v8.1.0beta1","v8.1.0beta2","v8.1RC2","v8.2RC1","v8.2beta1","v9.0.0beta2","v9.0beta1","v9.1.0beta1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-8138.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}