{"id":"CVE-2026-47081","aliases":["DEBIAN-CVE-2026-47081","EUVD-2026-45004","GHSA-w8cp-9j4g-wc9p","UBUNTU-CVE-2026-47081","openSUSE-SU-2026:21368-1"],"status":"published","title":"An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an...","description":"An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an XAPPLEPUSHSERVICE folder existence oracle and push hijack. An authenticated IMAP user could probe for the existence of arbitrary mailboxes on other users' accounts via the XAPPLEPUSHSERVICE command and then create Apple Push Notification Service notifications for new mail in those mailboxes to their own APNS device. This did not leak any data about the content of mailboxes. Instead, a \"mailbox has changed\" notice would be pushed when the mailbox modseq changed.","severity":{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00243,"percentile":0.15634,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2026-07-16T00:00:00Z","modified":"2026-10-25T09:47:35Z","fixes":[{"ecosystem":"Debian:12","package":"cyrus-imapd","fixed_in":["3.6.1-4+deb12u5"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"cyrus-imapd","fixed_in":["3.10.2-1+deb13u2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"cyrus-imapd","fixed_in":["3.12.3-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"cyrus-imapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.1-4+deb12u5"}]}],"versions":["3.6.1-4","3.6.1-4+deb12u1","3.6.1-4+deb12u2","3.6.1-4+deb12u3","3.6.1-4+deb12u4"]},{"source":"osv","ecosystem":"Debian:13","package":"cyrus-imapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10.2-1+deb13u2"}]}],"versions":["3.10.2-1","3.10.2-1+deb13u1"]},{"source":"osv","ecosystem":"Debian:14","package":"cyrus-imapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.12.3-1"}]}],"versions":["3.10.2-1","3.12.0-1","3.12.0-2","3.12.1-1","3.12.1-2","3.12.1-3","3.12.2-1","3.12.3-1~bpo13+1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"cyrus-imapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.10-3build1","2.5.10-3build2","2.5.10-3ubuntu1","2.5.10-3ubuntu1.1","2.5.10-3ubuntu1.1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"cyrus-imapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.11-1","3.0.11-1build1","3.0.12-1","3.0.12-2","3.0.12-2ubuntu2","3.0.12-2ubuntu3","3.0.13-2ubuntu1","3.0.13-3ubuntu1","3.0.13-4ubuntu1","3.0.13-5","3.0.13-5ubuntu0.1~esm1","3.0.13-5ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"cyrus-imapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.6-2build1","3.4.2-2","3.4.2-2build1","3.4.3-2","3.4.3-3","3.4.3-3build2","3.4.3-3ubuntu0.1","3.4.3-3ubuntu0.1+esm1","3.4.3-3ubuntu0.3","3.4.3-3ubuntu0.3+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"cyrus-imapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.8.0-5","3.8.1-1","3.8.1-1build1","3.8.1-1build2","3.8.1-3","3.8.1-3build3","3.8.2-1","3.8.2-1ubuntu0.1~esm1","3.8.2-1ubuntu0.2","3.8.2-1ubuntu0.2+esm1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"cyrus-imapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.12.1-3","3.12.2-1","3.12.2-1build1","3.12.3-3build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"cyrus-imapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.10.2-1","3.12.1-2","3.12.1-2build1","3.12.1-3"]},{"source":"osv","ecosystem":"openSUSE:Leap 16.0","package":"cyrus-imapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.7-bp160.1.1"}]}],"bundled":9}],"products":[{"vendor":"cyrusimap","product":"cyrus imap"}],"references":[{"url":"https://www.cyrusimap.org/imap/download/release-notes/index.html","tags":["report"]},{"url":"https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.3.html","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47081"},{"url":"https://github.com/advisories/GHSA-w8cp-9j4g-wc9p"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-47081","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-47081","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-47081","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1271617","tags":["report"]},{"url":"https://bugzilla.suse.com/1271618","tags":["report"]},{"url":"https://bugzilla.suse.com/1271619","tags":["report"]},{"url":"https://bugzilla.suse.com/1271620","tags":["report"]},{"url":"https://bugzilla.suse.com/1271621","tags":["report"]},{"url":"https://bugzilla.suse.com/1271622","tags":["report"]},{"url":"https://bugzilla.suse.com/1271623","tags":["report"]},{"url":"https://bugzilla.suse.com/1271624","tags":["report"]},{"url":"https://bugzilla.suse.com/1271625","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-47081","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-47082","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-47083","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-47084","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-47085","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-47086","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-47087","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-47088","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-47089","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-47081","description":"An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an XAPPLEPUSHSERVICE folder existence oracle and push hijack. An authenticated IMAP user could probe for the existence of arbitrary mailboxes on other users' accounts via the XAPPLEPUSHSERVICE command and then create Apple Push Notification Service notifications for new mail in those mailboxes to their own APNS device. This did not leak any data about the content of mailboxes. Instead, a \"mailbox has changed\" notice would be pushed when the mailbox modseq changed.","status":"published","published":"2026-07-16T00:00:00Z","modified":"2026-07-16T18:30:39.011Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T13:36:29.327819Z"}],"euvd":[{"id":"EUVD-2026-45004","description":"An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an XAPPLEPUSHSERVICE folder existence oracle and push hijack. An authenticated IMAP user could probe for the existence of arbitrary mailboxes on other users' accounts via the XAPPLEPUSHSERVICE command and then create Apple Push Notification Service notifications for new mail in those mailboxes to their own APNS device. This did not leak any data about the content of mailboxes. Instead, a \"mailbox has changed\" notice would be pushed when the mailbox modseq changed.","status":"published","published":"2026-07-16T00:00:00Z","modified":"2026-07-16T18:30:39Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-02T18:19:51.364603Z"}],"ghsa":[{"id":"GHSA-w8cp-9j4g-wc9p","title":"An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an...","description":"An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an XAPPLEPUSHSERVICE folder existence oracle and push hijack. An authenticated IMAP user could probe for the existence of arbitrary mailboxes on other users' accounts via the XAPPLEPUSHSERVICE command and then create Apple Push Notification Service notifications for new mail in those mailboxes to their own APNS device. This did not leak any data about the content of mailboxes. Instead, a \"mailbox has changed\" notice would be pushed when the mailbox modseq changed.","status":"published","published":"2026-07-16T21:30:35Z","modified":"2026-07-16T21:30:40Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:09:34.599528Z"}],"nvd":[{"id":"CVE-2026-47081","description":"An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an XAPPLEPUSHSERVICE folder existence oracle and push hijack. An authenticated IMAP user could probe for the existence of arbitrary mailboxes on other users' accounts via the XAPPLEPUSHSERVICE command and then create Apple Push Notification Service notifications for new mail in those mailboxes to their own APNS device. This did not leak any data about the content of mailboxes. Instead, a \"mailbox has changed\" notice would be pushed when the mailbox modseq changed.","status":"published","published":"2026-07-16T19:16:48.573Z","modified":"2026-10-24T20:10:00.137Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"secondary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:12:30.250437Z"}],"osv":[{"id":"DEBIAN-CVE-2026-47081","description":"An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an XAPPLEPUSHSERVICE folder existence oracle and push hijack. An authenticated IMAP user could probe for the existence of arbitrary mailboxes on other users' accounts via the XAPPLEPUSHSERVICE command and then create Apple Push Notification Service notifications for new mail in those mailboxes to their own APNS device. This did not leak any data about the content of mailboxes. Instead, a \"mailbox has changed\" notice would be pushed when the mailbox modseq changed.","status":"published","published":"2026-07-16T19:16:48.573Z","modified":"2026-10-25T09:47:35.015188807Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-02T15:45:56.444225Z"},{"id":"UBUNTU-CVE-2026-47081","description":"An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an XAPPLEPUSHSERVICE folder existence oracle and push hijack. An authenticated IMAP user could probe for the existence of arbitrary mailboxes on other users' accounts via the XAPPLEPUSHSERVICE command and then create Apple Push Notification Service notifications for new mail in those mailboxes to their own APNS device. This did not leak any data about the content of mailboxes. Instead, a \"mailbox has changed\" notice would be pushed when the mailbox modseq changed.","status":"published","published":"2026-07-16T19:16:00Z","modified":"2026-10-17T12:55:49.060207724Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-02T16:56:30.797112Z"},{"id":"openSUSE-SU-2026:21368-1","title":"Security update for cyrus-imapd","description":"This update for cyrus-imapd fixes the following issues:\n\nChanges in cyrus-imapd:\n\n- Update to 3.8.7 (bugfix release)\n- CVE-2026-47081: XAPPLEPUSHSERVICE folder existence oracle and push hijack (bsc#1271617)\n- CVE-2026-47083: ESEARCH cross-user content oracle (bsc#1271619)\n- CVE-2026-47082: Vacation \"fcc\" skips destination-mailbox ACL (bsc#1271618)\n- CVE-2026-47084: LOCALDELETE bypassed ACL checks (bsc#1271620)\n- CVE-2026-47085: URLAUTH token forgery via missing mboxkey (bsc#1271621)\n- CVE-2026-47086: GENURLAUTH issued tokens bypassing ACLs (bsc#1271622)\n- CVE-2026-47087: URLAUTH does not honor revoked authorizer access (bsc#1271623)\n- CVE-2026-47088: Heap exposure in nested MIME comment parsing (bsc#1271624)\n- CVE-2026-47089: LISTRIGHTS not limited to users with admin access (bsc#1271625)\n","status":"published","published":"2026-07-17T15:44:26Z","modified":"2026-07-19T13:15:06.586381849Z","updated_at":"2026-11-02T16:58:41.885092Z"}]}}