{"id":"BIT-nextcloud-2021-22896","details":"Nextcloud Mail before 1.9.5 suffers from improper access control due to a missing permission check allowing other authenticated users to create mail aliases for other users.","aliases":["CVE-2021-22896","GHSA-jmgp-77jq-fjp3"],"modified":"2026-09-08T08:48:15.994636877Z","published":"2026-07-12T23:47:36.339Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:*"]},"references":[{"type":"ADVISORY","url":"https://github.com/nextcloud/mail/pull/4864"},{"type":"ADVISORY","url":"https://github.com/nextcloud/mail/releases/tag/v1.9.5"},{"type":"ADVISORY","url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3"},{"type":"ADVISORY","url":"https://hackerone.com/reports/1129996"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22896"}],"affected":[{"package":{"name":"nextcloud","ecosystem":"Bitnami","purl":"pkg:bitnami/nextcloud"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.9.5"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/nextcloud/BIT-nextcloud-2021-22896.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"}]}],"schema_version":"1.9.0"}