HighFix available
dovecot — security advisory
The ACL plugin in Dovecot before 1.1.4 treats negative access rights as if they are positive access rights, which allows attackers to bypass intended access restrictions.
- Products
- dovecot
- Affected versions
- Not specified
- Fixed versions
- 1:1.0.15-2.2
- CVEs
- CVE-2008-4577
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 23:55 UTC · Revision 1
Source evidence
The ACL plugin in Dovecot before 1.1.4 treats negative access rights as if they are positive access rights, which allows attackers to bypass intended access restrictions.
osv:DEBIAN-CVE-2008-4577
dovecot
Fixed versions: 1:1.0.15-2.2
dovecot
Fixed versions: 1:1.0.15-2.2
dovecot
Fixed versions: 1:1.0.15-2.2
Complete source record
{
"id": "41a1733dfeb71ed024af3c6b18ca3a45ebfe7d8b92da5b2a5784afb82a5c7ee3",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2008-4577",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2008-4577",
"summary": "The ACL plugin in Dovecot before 1.1.4 treats negative access rights as if they are positive access rights, which allows attackers to bypass intended access restrictions.",
"evidence": "osv:DEBIAN-CVE-2008-4577",
"products": [
{
"name": {
"value": "dovecot",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.0.15-2.2",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.0.15-2.2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.0.15-2.2",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2008-4577",
"aliases": [
"DEBIAN-CVE-2008-4577"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.0.15-2.2"
}
]
}
],
"package": {
"name": "dovecot",
"purl": "pkg:deb/debian/dovecot?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2008-4577.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.0.15-2.2"
}
]
}
],
"package": {
"name": "dovecot",
"purl": "pkg:deb/debian/dovecot?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2008-4577.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.0.15-2.2"
}
]
}
],
"package": {
"name": "dovecot",
"purl": "pkg:deb/debian/dovecot?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2008-4577.json"
},
"ecosystem_specific": {
"urgency": "low"
}
}
],
"modified": "2026-10-23T18:01:50.888286137Z",
"provider": "osv",
"upstream": [
"CVE-2008-4577"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2008-4577"
]
},
"related_cves": [
{
"value": "CVE-2008-4577",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 419447,
"published_at": "2008-10-15T20:08:02.67+00:00"
}