{"id":"CVE-2021-41239","details":"Nextcloud server is a self hosted system designed to provide cloud style services. In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. There are no known workarounds.","modified":"2026-04-10T04:38:23.247458Z","published":"2022-03-08T18:15:07.873Z","related":["GHSA-g722-cm3h-8wrx","openSUSE-SU-2022:0089-1","openSUSE-SU-2022:0098-1"],"references":[{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202208-17"},{"type":"REPORT","url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx"},{"type":"FIX","url":"https://github.com/nextcloud/server/issues/27122"},{"type":"FIX","url":"https://github.com/nextcloud/server/pull/29260"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nextcloud/server","events":[{"introduced":"0"},{"fixed":"50221f94abea4f26710091d94f2930a0322036bc"},{"introduced":"8985b7930653139859002eb3eca2852999ed8f0d"},{"fixed":"5b0854cd30ff7d35192e99b83709da3c6c579924"},{"introduced":"0"},{"last_affected":"07e359b7de671a81a7baad701d4496a9f871a770"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"20.0.14"},{"introduced":"21.0.0"},{"fixed":"21.0.6"},{"introduced":"0"},{"last_affected":"22.2.0"}]}}],"versions":["22.1.0","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","v15.0.0RC1","v15.0.0beta1","v15.0.0beta2","v16.0.0RC1","v16.0.0alpha1","v16.0.0beta1","v16.0.0beta2","v16.0.0beta3","v17.0.0beta1","v17.0.0beta2","v17.0.0beta3","v17.0.0beta4","v18.0.0RC1","v18.0.0beta1","v18.0.0beta2","v18.0.0beta3","v18.0.0beta4","v19.0.0RC1","v19.0.0RC2","v19.0.0beta1","v19.0.0beta2","v19.0.0beta3","v19.0.0beta4","v19.0.0beta5","v19.0.0beta6","v19.0.0beta7","v20.0.0","v20.0.0RC1","v20.0.0RC2","v20.0.0beta1","v20.0.0beta2","v20.0.0beta3","v20.0.0beta4","v20.0.1","v20.0.10","v20.0.10RC1","v20.0.11","v20.0.11rc1","v20.0.13","v20.0.13rc1","v20.0.14rc1","v20.0.1RC1","v20.0.2","v20.0.2RC1","v20.0.2RC2","v20.0.3","v20.0.3RC2","v20.0.4","v20.0.5","v20.0.5RC1","v20.0.5RC2","v20.0.6","v20.0.6RC1","v20.0.7","v20.0.7RC1","v20.0.8","v20.0.8RC1","v20.0.9","v20.0.9RC1","v21.0.0","v21.0.0beta1","v21.0.0beta2","v21.0.0beta3","v21.0.0beta4","v21.0.0beta5","v21.0.0beta6","v21.0.0beta7","v21.0.0beta8","v21.0.1","v21.0.1RC1","v21.0.2","v21.0.2RC1","v21.0.3","v21.0.3rc1","v21.0.4","v21.0.4rc1","v21.0.5","v21.0.5rc1","v21.0.6rc1","v22.0.0","v22.0.0beta1","v22.0.0beta2","v22.0.0beta4","v22.0.0beta5","v22.0.0rc1","v22.0.0rc2","v22.1.0","v22.1.0rc1","v22.1.1","v22.1.1rc1","v22.1.1rc2","v22.2.0","v22.2.0rc2","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/cve-osv-conversion/osv-output/CVE-2021-41239.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}