{"id":"CVE-2021-22906","aliases":["EUVD-2021-10035","GHSA-3829-45wm-ww36"],"status":"published","description":"Nextcloud End-to-End Encryption before 1.5.3, 1.6.3 and 1.7.1 suffers from a denial of service vulnerability due to permitting any authenticated users to lock files of other users.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00722,"percentile":0.54276,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400","CWE-639"],"published":"2021-06-11T15:49:39Z","modified":"2026-10-24T10:30:40Z","products":[{"vendor":"nextcloud","product":"end-to-end_encryption"}],"references":[{"url":"https://hackerone.com/reports/1189174","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report"]},{"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3829-45wm-ww36","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]}],"sources":{"cve":[{"id":"CVE-2021-22906","description":"Nextcloud End-to-End Encryption before 1.5.3, 1.6.3 and 1.7.1 suffers from a denial of service vulnerability due to permitting any authenticated users to lock files of other users.","status":"published","published":"2021-06-11T15:49:39Z","modified":"2024-08-03T18:58:25.587Z","cwes":["CWE-400"],"updated_at":"2026-11-02T14:32:57.701381Z"}],"euvd":[{"id":"EUVD-2021-10035","description":"Nextcloud End-to-End Encryption before 1.5.3, 1.6.3 and 1.7.1 suffers from a denial of service vulnerability due to permitting any authenticated users to lock files of other users.","status":"published","published":"2021-06-11T15:49:39Z","modified":"2024-08-03T18:58:25Z","updated_at":"2026-11-03T03:25:01.154097Z"}],"nvd":[{"id":"CVE-2021-22906","description":"Nextcloud End-to-End Encryption before 1.5.3, 1.6.3 and 1.7.1 suffers from a denial of service vulnerability due to permitting any authenticated users to lock files of other users.","status":"published","published":"2021-06-11T16:15:11.677Z","modified":"2026-06-17T03:37:59.927Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-400","CWE-639"],"updated_at":"2026-11-02T14:06:54.439974Z"}],"osv":[{"id":"CVE-2021-22906","description":"Nextcloud End-to-End Encryption before 1.5.3, 1.6.3 and 1.7.1 suffers from a denial of service vulnerability due to permitting any authenticated users to lock files of other users.","status":"published","published":"2021-06-11T16:15:11.677Z","modified":"2026-10-24T10:30:40.811901065Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:18.367807Z"}]}}