MediumFix available
cyrus-imapd — security advisory
An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The LOCALDELETE command bypassed ACL checks. An authenticated but non-admin user could invoke the admin-only LOCALDELETE IMAP command and delete mailboxes for which they had no permissions.
- Products
- cyrus-imapd
- Affected versions
- 3.10.2-1, 3.10.2-1+deb13u1, 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, 3.6.1-4, 3.6.1-4+deb12u1, 3.6.1-4+deb12u2, 3.6.1-4+deb12u3, 3.6.1-4+deb12u4
- Fixed versions
- 3.10.2-1+deb13u2, 3.12.3-1, 3.6.1-4+deb12u5
- CVEs
- CVE-2026-47084
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:52 UTC · Revision 2
Source evidence
An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The LOCALDELETE command bypassed ACL checks. An authenticated but non-admin user could invoke the admin-only LOCALDELETE IMAP command and delete mailboxes for which they had no permissions.
osv:DEBIAN-CVE-2026-47084
cyrus-imapd
Fixed versions: 3.6.1-4+deb12u5
cyrus-imapd
Fixed versions: 3.10.2-1+deb13u2
cyrus-imapd
Fixed versions: 3.12.3-1
Complete source record
{
"id": "8f24c59a587dad25ae335adac83444e0888a14f82ffcf0df97011ad5c90850e0",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-47084",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-47084",
"summary": "An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The LOCALDELETE command bypassed ACL checks. An authenticated but non-admin user could invoke the admin-only LOCALDELETE IMAP command and delete mailboxes for which they had no permissions.",
"evidence": "osv:DEBIAN-CVE-2026-47084",
"products": [
{
"name": {
"value": "cyrus-imapd",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.1-4+deb12u5",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "3.6.1-4",
"evidence": "/affected/0/versions"
},
{
"value": "3.6.1-4+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "3.6.1-4+deb12u2",
"evidence": "/affected/0/versions"
},
{
"value": "3.6.1-4+deb12u3",
"evidence": "/affected/0/versions"
},
{
"value": "3.6.1-4+deb12u4",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "cyrus-imapd",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.10.2-1+deb13u2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "3.10.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.10.2-1+deb13u1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "cyrus-imapd",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.12.3-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "3.10.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.12.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.12.0-2",
"evidence": "/affected/2/versions"
},
{
"value": "3.12.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.12.1-2",
"evidence": "/affected/2/versions"
},
{
"value": "3.12.1-3",
"evidence": "/affected/2/versions"
},
{
"value": "3.12.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.12.3-1~bpo13+1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-47084",
"aliases": [
"DEBIAN-CVE-2026-47084"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.1-4+deb12u5"
}
]
}
],
"package": {
"name": "cyrus-imapd",
"purl": "pkg:deb/debian/cyrus-imapd?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"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"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47084.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.10.2-1+deb13u2"
}
]
}
],
"package": {
"name": "cyrus-imapd",
"purl": "pkg:deb/debian/cyrus-imapd?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.10.2-1",
"3.10.2-1+deb13u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47084.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.12.3-1"
}
]
}
],
"package": {
"name": "cyrus-imapd",
"purl": "pkg:deb/debian/cyrus-imapd?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"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"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47084.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-25T09:47:29.720447991Z",
"provider": "osv",
"upstream": [
"CVE-2026-47084"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-47084"
]
},
"related_cves": [
{
"value": "CVE-2026-47084",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 445118,
"published_at": "2026-07-16T19:16:48.987+00:00"
}