{"id":"CVE-2021-41241","aliases":["EUVD-2021-28295","GHSA-m4wp-r357-4q94","openSUSE-SU-2022:0089-1","openSUSE-SU-2022:0098-1"],"status":"published","title":"Advanced permissions is not respected for subfolders in Nextcloud server","description":"Nextcloud server is a self hosted system designed to provide cloud style services. The groupfolders application for Nextcloud allows sharing a folder with a group of people. In addition, it allows setting \"advanced permissions\" on subfolders, for example, a user could be granted access to the groupfolder but not specific subfolders. Due to a lacking permission check in affected versions, a user could still access these subfolders by copying the groupfolder to another location. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. Users unable to upgrade should disable the \"groupfolders\" application in the admin settings.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0085,"percentile":0.58425,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862","CWE-863"],"published":"2022-03-08T18:25:10Z","modified":"2026-10-24T10:51:25Z","affected":[{"source":"osv","ecosystem":"SUSE:Package Hub 12","package":"nextcloud","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"21.0.9-37.1"}]}],"bundled":3},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP3","package":"nextcloud","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"21.0.9-bp153.2.12.1"}]}],"bundled":3},{"source":"osv","ecosystem":"openSUSE:Leap 15.3","package":"nextcloud","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"21.0.9-bp153.2.12.1"}]}],"bundled":3}],"products":[{"vendor":"kiteworks","product":"security-advisories"},{"vendor":"nextcloud","product":"nextcloud_server"},{"vendor":"nextcloud","product":"security-advisories"}],"references":[{"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m4wp-r357-4q94","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://github.com/nextcloud/groupfolders/issues/1692","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Patch","Third Party Advisory","fix"]},{"url":"https://github.com/nextcloud/server/pull/29362","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://security.gentoo.org/glsa/202208-17","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","Third Party Advisory","advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/LRMAMGLMCXJ2VKQZRQSKAEGDMPY3MZN7/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1196905","tags":["report"]},{"url":"https://bugzilla.suse.com/1196908","tags":["report"]},{"url":"https://bugzilla.suse.com/1196952","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2021-41239","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-41241","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-41741","tags":["web"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/EZTHEQMMIKP2RX3EBMXDQAOIVUPMCDFB/","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-41241","title":"Advanced permissions is not respected for subfolders in Nextcloud server","description":"Nextcloud server is a self hosted system designed to provide cloud style services. The groupfolders application for Nextcloud allows sharing a folder with a group of people. In addition, it allows setting \"advanced permissions\" on subfolders, for example, a user could be granted access to the groupfolder but not specific subfolders. Due to a lacking permission check in affected versions, a user could still access these subfolders by copying the groupfolder to another location. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. Users unable to upgrade should disable the \"groupfolders\" application in the admin settings.","status":"published","published":"2022-03-08T18:25:10Z","modified":"2025-04-23T18:58:26.893Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-28295","description":"Nextcloud server is a self hosted system designed to provide cloud style services. The groupfolders application for Nextcloud allows sharing a folder with a group of people. In addition, it allows setting \"advanced permissions\" on subfolders, for example, a user could be granted access to the groupfolder but not specific subfolders. Due to a lacking permission check in affected versions, a user could still access these subfolders by copying the groupfolder to another location. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. Users unable to upgrade should disable the \"groupfolders\" application in the admin settings.","status":"published","published":"2022-03-08T18:25:10Z","modified":"2025-04-23T18:58:26Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T20:52:07.453218Z"}],"nvd":[{"id":"CVE-2021-41241","description":"Nextcloud server is a self hosted system designed to provide cloud style services. The groupfolders application for Nextcloud allows sharing a folder with a group of people. In addition, it allows setting \"advanced permissions\" on subfolders, for example, a user could be granted access to the groupfolder but not specific subfolders. Due to a lacking permission check in affected versions, a user could still access these subfolders by copying the groupfolder to another location. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. Users unable to upgrade should disable the \"groupfolders\" application in the admin settings.","status":"published","published":"2022-03-08T19:15:07.927Z","modified":"2026-06-17T04:08:09.333Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-863","CWE-862"],"updated_at":"2026-11-02T14:07:05.198719Z"}],"osv":[{"id":"CVE-2021-41241","description":"Nextcloud server is a self hosted system designed to provide cloud style services. The groupfolders application for Nextcloud allows sharing a folder with a group of people. In addition, it allows setting \"advanced permissions\" on subfolders, for example, a user could be granted access to the groupfolder but not specific subfolders. Due to a lacking permission check in affected versions, a user could still access these subfolders by copying the groupfolder to another location. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. Users unable to upgrade should disable the \"groupfolders\" application in the admin settings.","status":"published","published":"2022-03-08T19:15:07.927Z","modified":"2026-10-24T10:51:25.63803267Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:21.557945Z"},{"id":"openSUSE-SU-2022:0089-1","title":"Security update for nextcloud","description":"This update for nextcloud fixes the following issues:\n\nnextcloud was updated to 21.0.9:\n\n- CVE-2021-41239 (CWE-200): user enumeration setting not obeyed in User Status API (boo#1196905)\n- CVE-2021-41241 (CWE-863): groupfolders advanced permissions is not obeyed for subfolders (boo#1196908)\n- CVE-2021-41741 (CWE-400): High memory usage for generating preview of broken image (boo#1196952)\n- For more changes see https://nextcloud.com/changelog/#21-0-9\n","status":"published","published":"2022-03-23T17:01:26Z","modified":"2025-05-07T18:13:15.913555Z","updated_at":"2026-11-02T16:58:32.653274Z"},{"id":"openSUSE-SU-2022:0098-1","title":"Security update for nextcloud","description":"This update for nextcloud fixes the following issues:\n\nnextcloud was updated to 21.0.9:\n\n- CVE-2021-41239 (CWE-200): user enumeration setting not obeyed in User Status API (boo#1196905)\n- CVE-2021-41241 (CWE-863): groupfolders advanced permissions is not obeyed for subfolders (boo#1196908)\n- CVE-2021-41741 (CWE-400): High memory usage for generating preview of broken image (boo#1196952)\n- For more changes see https://nextcloud.com/changelog/#21-0-9\n","status":"published","published":"2022-03-31T10:01:17Z","modified":"2026-02-04T02:46:24.651274Z","updated_at":"2026-11-02T16:58:32.653274Z"}]}}