{"id":"CVE-2019-15624","aliases":["EUVD-2019-6581","GHSA-pqcg-83hr-mr43","openSUSE-SU-2020:0220-1","openSUSE-SU-2020:0229-1"],"status":"published","title":"Improper Input Validation in Nextcloud Server 15.0.7 allows group admins to create users with IDs...","description":"Improper Input Validation in Nextcloud Server 15.0.7 allows group admins to create users with IDs of system folders.","severity":{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01472,"percentile":0.74004,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2020-02-04T19:08:57Z","modified":"2026-10-24T10:30:57Z","affected":[{"source":"osv","ecosystem":"SUSE:Package Hub 12","package":"nextcloud","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"15.0.14-bp151.3.3.1"}]}],"bundled":6},{"source":"osv","ecosystem":"SUSE:Package Hub 15","package":"nextcloud","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"15.0.14-bp151.3.3.1"}]}],"bundled":6},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP1","package":"nextcloud","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"15.0.14-bp151.3.3.1"}]}],"bundled":6},{"source":"osv","ecosystem":"openSUSE:Leap 15.1","package":"nextcloud","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"15.0.14-bp151.3.3.1"}]}],"bundled":6},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP1","package":"nextcloud","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"15.0.14-bp151.3.6.1"}]}],"bundled":6}],"products":[{"vendor":"hackerone","product":"nextcloud server"},{"vendor":"nextcloud","product":"nextcloud_server"},{"vendor":"opensuse","product":"backports"},{"vendor":"suse","product":"suse_linux_enterprise_server"}],"references":[{"url":"https://hackerone.com/reports/508493","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nextcloud.com/security/advisory/?id=NC-SA-2019-015","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00019.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00022.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-15624"},{"url":"https://github.com/advisories/GHSA-pqcg-83hr-mr43"},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/4ZKAQ7AEGBUT5BPIHKS2AN3QK2XYBODP/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1162766","tags":["report"]},{"url":"https://bugzilla.suse.com/1162775","tags":["report"]},{"url":"https://bugzilla.suse.com/1162776","tags":["report"]},{"url":"https://bugzilla.suse.com/1162781","tags":["report"]},{"url":"https://bugzilla.suse.com/1162782","tags":["report"]},{"url":"https://bugzilla.suse.com/1162784","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2019-15613","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-15621","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-15623","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-15624","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-8118","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-8119","tags":["web"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/YNXRESXAEC3O5ZYBXEVOSSEP4DH2EXOI/","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2019-15624","description":"Improper Input Validation in Nextcloud Server 15.0.7 allows group admins to create users with IDs of system folders.","status":"published","published":"2020-02-04T19:08:57Z","modified":"2024-08-05T00:56:20.901Z","updated_at":"2026-11-02T14:20:21.397307Z"}],"euvd":[{"id":"EUVD-2019-6581","description":"Improper Input Validation in Nextcloud Server 15.0.7 allows group admins to create users with IDs of system folders.","status":"published","published":"2020-02-04T19:08:57Z","modified":"2024-08-05T00:56:20Z","updated_at":"2026-11-03T02:40:35.584574Z"}],"ghsa":[{"id":"GHSA-pqcg-83hr-mr43","title":"Improper Input Validation in Nextcloud Server 15.0.7 allows group admins to create users with IDs...","description":"Improper Input Validation in Nextcloud Server 15.0.7 allows group admins to create users with IDs of system folders.","status":"published","published":"2022-05-24T17:07:57Z","modified":"2023-01-29T05:01:18Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:44:46.934337Z"}],"nvd":[{"id":"CVE-2019-15624","description":"Improper Input Validation in Nextcloud Server 15.0.7 allows group admins to create users with IDs of system folders.","status":"published","published":"2020-02-04T20:15:12.747Z","modified":"2026-06-17T02:20:46.21Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:05:43.875329Z"}],"osv":[{"id":"CVE-2019-15624","description":"Improper Input Validation in Nextcloud Server 15.0.7 allows group admins to create users with IDs of system folders.","status":"published","published":"2020-02-04T20:15:12.747Z","modified":"2026-10-24T10:30:57.658627106Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:11.361782Z"},{"id":"openSUSE-SU-2020:0220-1","title":"Security update for nextcloud","description":"This update for nextcloud fixes the following issues:\n\nNextcloud was updated to 15.0.14:\n\n- NC-SA-2020-002, CVE-2019-15613: workflow rules to depend their behaviour on the file extension when checking file mimetypes  (boo#1162766)\n- NC-SA-2019-016, CVE-2019-15623: Exposure of Private Information caused the server to send it's domain and user IDs to the Nextcloud Lookup Server without any further data when the Lookup server is disabled (boo#1162775)\n- NC-SA-2019-015, CVE-2019-15624: Improper Input Validation allowed group admins to create users with IDs of system folders (boo#1162776)\n- NC-SA-2019-012, CVE-2020-8119: Improper authorization caused leaking of previews and files when a file-drop share link is opened via the gallery app (boo#1162781)\n- NC-SA-2019-014, CVE-2020-8118: An authenticated server-side request forgery allowed to detect local and remote services when adding a new subscription in the calendar application (boo#1162782)\n- NC-SA-2020-012, CVE-2019-15621: Improper permissions preservation causes sharees to be able to reshare with write permissions when sharing the mount point of a share they received, as a public link (boo#1162784)\n- To many changes.\n   For detail see: https://nextcloud.com/changelog/\n\nnextcloud was updated to 13.0.12:\n\n- Fix NC-SA-2020-001\n- To many changes.\n    For detail see: https://nextcloud.com/changelog/\n\n","status":"published","published":"2020-02-15T19:09:47Z","modified":"2026-02-04T04:00:09.192903Z","updated_at":"2026-11-02T16:58:31.152112Z"},{"id":"openSUSE-SU-2020:0229-1","title":"Security update for nextcloud","description":"This update for nextcloud fixes the following issues:\n\nNextcloud was updated to 15.0.14:\n\n- NC-SA-2020-002, CVE-2019-15613: workflow rules to depend their behaviour on the file extension when checking file mimetypes  (boo#1162766)\n- NC-SA-2019-016, CVE-2019-15623: Exposure of Private Information caused the server to send it's domain and user IDs to the Nextcloud Lookup Server without any further data when the Lookup server is disabled (boo#1162775)\n- NC-SA-2019-015, CVE-2019-15624: Improper Input Validation allowed group admins to create users with IDs of system folders (boo#1162776)\n- NC-SA-2019-012, CVE-2020-8119: Improper authorization caused leaking of previews and files when a file-drop share link is opened via the gallery app (boo#1162781)\n- NC-SA-2019-014, CVE-2020-8118: An authenticated server-side request forgery allowed to detect local and remote services when adding a new subscription in the calendar application (boo#1162782)\n- NC-SA-2020-012, CVE-2019-15621: Improper permissions preservation causes sharees to be able to reshare with write permissions when sharing the mount point of a share they received, as a public link (boo#1162784)\n- To many changes.\n   For detail see: https://nextcloud.com/changelog/\n\nnextcloud was updated to 13.0.12:\n\n- Fix NC-SA-2020-001\n- To many changes.\n    For detail see: https://nextcloud.com/changelog/\n\n\nThis update was imported from the openSUSE:Leap:15.1:Update update project.","status":"published","published":"2020-02-17T12:31:04Z","modified":"2026-02-04T03:02:23.742999Z","updated_at":"2026-11-02T16:58:31.152112Z"}]}}