Low
mutt — security advisory
In mutt before 2.3.2, the imap_auth_gss security level is mishandled.
- Products
- mutt
- Affected versions
- 1.10.1-2.1, 1.12.2-1, 1.12.2-2, 1.13.0-1, 1.13.2-1, 1.13.2-1ubuntu0.1, 1.13.2-1ubuntu0.2, 1.13.2-1ubuntu0.3, 1.13.2-1ubuntu0.4, 1.13.2-1ubuntu0.5, 1.13.2-1ubuntu0.6, 1.5.23-3.1ubuntu1, 1.5.23-3.1ubuntu2, 1.5.24-1, 1.5.24-1build1, 1.5.24-1ubuntu0.1, 1.5.24-1ubuntu0.2, 1.5.24-1ubuntu0.3, 1.5.24-1ubuntu0.4, 1.5.24-1ubuntu0.5, 1.5.24-1ubuntu0.6, 1.5.24-1ubuntu0.6+esm2, 1.5.24-1ubuntu0.6+esm3, 1.8.3+neomutt20170609-2build1, 1.9.1-2, 1.9.1-3, 1.9.1-4, 1.9.1-5, 1.9.2-1, 1.9.3-1, 1.9.4-2, 1.9.4-3, 1.9.4-3ubuntu0.1, 1.9.4-3ubuntu0.2, 1.9.4-3ubuntu0.3, 1.9.4-3ubuntu0.4, 1.9.4-3ubuntu0.5, 1.9.4-3ubuntu0.6, 1.9.4-3ubuntu0.6+esm1, 2.0.5-4.1build1, 2.1.3-1, 2.1.4-1, 2.1.4-1build1, 2.1.4-1ubuntu1.1, 2.1.4-1ubuntu1.2, 2.2.12-0.1, 2.2.12-0.1build2, 2.2.12-0.1build3, 2.2.12-0.1build4, 2.2.13-1, 2.2.13-1build1, 2.2.13-1build2, 2.2.9-1, 2.2.9-1ubuntu0.23.10.1, 2.3.2-1, 2.4.0-1, 2.4.1-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-43862
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:03 UTC · Revision 1
Source evidence
In mutt before 2.3.2, the imap_auth_gss security level is mishandled.
osv:UBUNTU-CVE-2026-43862
mutt
Fixed versions: Not specified
mutt
Fixed versions: Not specified
mutt
Fixed versions: Not specified
mutt
Fixed versions: Not specified
mutt
Fixed versions: Not specified
mutt
Fixed versions: Not specified
mutt
Fixed versions: Not specified
mutt
Fixed versions: Not specified
Complete source record
{
"id": "f13127d3c7bf32a8513d32ddaf7a13c0b5475dc91089f7ed1e3f0871587161d2",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-43862",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-43862",
"summary": "In mutt before 2.3.2, the imap_auth_gss security level is mishandled.",
"evidence": "osv:UBUNTU-CVE-2026-43862",
"products": [
{
"name": {
"value": "mutt",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.5.23-3.1ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.23-3.1ubuntu2",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.24-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.24-1build1",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.24-1ubuntu0.1",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.24-1ubuntu0.2",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.24-1ubuntu0.3",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.24-1ubuntu0.4",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.24-1ubuntu0.5",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.24-1ubuntu0.6",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.24-1ubuntu0.6+esm2",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.24-1ubuntu0.6+esm3",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "mutt",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.8.3+neomutt20170609-2build1",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.1-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.1-3",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.1-4",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.1-5",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.3-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.4-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.4-3",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.4-3ubuntu0.1",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.4-3ubuntu0.2",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.4-3ubuntu0.3",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.4-3ubuntu0.4",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.4-3ubuntu0.5",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.4-3ubuntu0.6",
"evidence": "/affected/1/versions"
},
{
"value": "1.9.4-3ubuntu0.6+esm1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "mutt",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.10.1-2.1",
"evidence": "/affected/2/versions"
},
{
"value": "1.12.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.12.2-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.13.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.13.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.13.2-1ubuntu0.1",
"evidence": "/affected/2/versions"
},
{
"value": "1.13.2-1ubuntu0.2",
"evidence": "/affected/2/versions"
},
{
"value": "1.13.2-1ubuntu0.3",
"evidence": "/affected/2/versions"
},
{
"value": "1.13.2-1ubuntu0.4",
"evidence": "/affected/2/versions"
},
{
"value": "1.13.2-1ubuntu0.5",
"evidence": "/affected/2/versions"
},
{
"value": "1.13.2-1ubuntu0.6",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "mutt",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.0.5-4.1build1",
"evidence": "/affected/3/versions"
},
{
"value": "2.1.3-1",
"evidence": "/affected/3/versions"
},
{
"value": "2.1.4-1",
"evidence": "/affected/3/versions"
},
{
"value": "2.1.4-1build1",
"evidence": "/affected/3/versions"
},
{
"value": "2.1.4-1ubuntu1.1",
"evidence": "/affected/3/versions"
},
{
"value": "2.1.4-1ubuntu1.2",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "mutt",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.2.9-1",
"evidence": "/affected/4/versions"
},
{
"value": "2.2.9-1ubuntu0.23.10.1",
"evidence": "/affected/4/versions"
},
{
"value": "2.2.12-0.1",
"evidence": "/affected/4/versions"
},
{
"value": "2.2.12-0.1build2",
"evidence": "/affected/4/versions"
},
{
"value": "2.2.12-0.1build3",
"evidence": "/affected/4/versions"
},
{
"value": "2.2.12-0.1build4",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "mutt",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.2.13-1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "mutt",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.2.13-1build2",
"evidence": "/affected/6/versions"
},
{
"value": "2.3.2-1",
"evidence": "/affected/6/versions"
},
{
"value": "2.4.0-1",
"evidence": "/affected/6/versions"
},
{
"value": "2.4.1-1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "mutt",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.2.13-1",
"evidence": "/affected/7/versions"
},
{
"value": "2.2.13-1build1",
"evidence": "/affected/7/versions"
},
{
"value": "2.2.13-1build2",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "low",
"structured": {
"id": "UBUNTU-CVE-2026-43862",
"aliases": [
"UBUNTU-CVE-2026-43862"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mutt",
"purl": "pkg:deb/ubuntu/mutt?arch=source&distro=esm-infra%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"1.5.23-3.1ubuntu1",
"1.5.23-3.1ubuntu2",
"1.5.24-1",
"1.5.24-1build1",
"1.5.24-1ubuntu0.1",
"1.5.24-1ubuntu0.2",
"1.5.24-1ubuntu0.3",
"1.5.24-1ubuntu0.4",
"1.5.24-1ubuntu0.5",
"1.5.24-1ubuntu0.6",
"1.5.24-1ubuntu0.6+esm2",
"1.5.24-1ubuntu0.6+esm3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43862.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mutt",
"binary_version": "1.5.24-1ubuntu0.6+esm3"
},
{
"binary_name": "mutt-patched",
"binary_version": "1.5.24-1ubuntu0.6+esm3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mutt",
"purl": "pkg:deb/ubuntu/mutt?arch=source&distro=esm-infra%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"1.8.3+neomutt20170609-2build1",
"1.9.1-2",
"1.9.1-3",
"1.9.1-4",
"1.9.1-5",
"1.9.2-1",
"1.9.3-1",
"1.9.4-2",
"1.9.4-3",
"1.9.4-3ubuntu0.1",
"1.9.4-3ubuntu0.2",
"1.9.4-3ubuntu0.3",
"1.9.4-3ubuntu0.4",
"1.9.4-3ubuntu0.5",
"1.9.4-3ubuntu0.6",
"1.9.4-3ubuntu0.6+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43862.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mutt",
"binary_version": "1.9.4-3ubuntu0.6+esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mutt",
"purl": "pkg:deb/ubuntu/mutt?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"1.10.1-2.1",
"1.12.2-1",
"1.12.2-2",
"1.13.0-1",
"1.13.2-1",
"1.13.2-1ubuntu0.1",
"1.13.2-1ubuntu0.2",
"1.13.2-1ubuntu0.3",
"1.13.2-1ubuntu0.4",
"1.13.2-1ubuntu0.5",
"1.13.2-1ubuntu0.6"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43862.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mutt",
"binary_version": "1.13.2-1ubuntu0.6"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mutt",
"purl": "pkg:deb/ubuntu/mutt?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"2.0.5-4.1build1",
"2.1.3-1",
"2.1.4-1",
"2.1.4-1build1",
"2.1.4-1ubuntu1.1",
"2.1.4-1ubuntu1.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43862.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mutt",
"binary_version": "2.1.4-1ubuntu1.2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mutt",
"purl": "pkg:deb/ubuntu/mutt?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"2.2.9-1",
"2.2.9-1ubuntu0.23.10.1",
"2.2.12-0.1",
"2.2.12-0.1build2",
"2.2.12-0.1build3",
"2.2.12-0.1build4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43862.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mutt",
"binary_version": "2.2.12-0.1build4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mutt",
"purl": "pkg:deb/ubuntu/mutt?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"2.2.13-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43862.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mutt",
"binary_version": "2.2.13-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mutt",
"purl": "pkg:deb/ubuntu/mutt?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"2.2.13-1build2",
"2.3.2-1",
"2.4.0-1",
"2.4.1-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43862.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mutt",
"binary_version": "2.4.1-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mutt",
"purl": "pkg:deb/ubuntu/mutt?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"2.2.13-1",
"2.2.13-1build1",
"2.2.13-1build2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43862.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mutt",
"binary_version": "2.2.13-1build2"
}
]
}
}
],
"modified": "2026-10-17T13:00:06.371052572Z",
"provider": "osv",
"upstream": [
"CVE-2026-43862"
],
"references": [
"https://ubuntu.com/security/CVE-2026-43862",
"https://www.cve.org/CVERecord?id=CVE-2026-43862"
]
},
"related_cves": [
{
"value": "CVE-2026-43862",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 360316,
"published_at": "2026-05-04T07:16:00+00:00"
}