Medium
opendmarc — security advisory
A weakness has been identified in Trusted Domain Project OpenDMARC up to 1.4.2. This affects the function opendmarc_get_tld of the file libopendmarc/opendmarc_tld.c : of the component PSL Wildcard Handler. Executing a manipulation can lead to origin validation error. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
- Products
- opendmarc
- Affected versions
- 1.3.1+dfsg-2, 1.3.1+dfsg-3, 1.3.1+dfsg-3ubuntu0.1~esm1, 1.3.2-2, 1.3.2-3, 1.3.2-3ubuntu0.1, 1.3.2-3ubuntu0.2, 1.3.2-6, 1.3.2-7, 1.3.2-7ubuntu0.1, 1.4.0~beta1+dfsg-6, 1.4.1.1-1, 1.4.1.1-2, 1.4.2-1, 1.4.2-3, 1.4.2-4, 1.4.2-4.1build1, 1.4.2-4.1build2, 1.4.2-5.1, 1.4.2-5.1build1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-101278
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:56 UTC · Revision 1
Source evidence
A weakness has been identified in Trusted Domain Project OpenDMARC up to 1.4.2. This affects the function opendmarc_get_tld of the file libopendmarc/opendmarc_tld.c : of the component PSL Wildcard Handler. Executing a manipulation can lead to origin validation error. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
osv:UBUNTU-CVE-2026-101278
opendmarc
Fixed versions: Not specified
opendmarc
Fixed versions: Not specified
opendmarc
Fixed versions: Not specified
opendmarc
Fixed versions: Not specified
opendmarc
Fixed versions: Not specified
opendmarc
Fixed versions: Not specified
opendmarc
Fixed versions: Not specified
Complete source record
{
"id": "903658e164982cdb9a9b9c96c8e3a45d96b37a4b283c439625e958ea98244558",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-101278",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-101278",
"summary": "A weakness has been identified in Trusted Domain Project OpenDMARC up to 1.4.2. This affects the function opendmarc_get_tld of the file libopendmarc/opendmarc_tld.c : of the component PSL Wildcard Handler. Executing a manipulation can lead to origin validation error. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.",
"evidence": "osv:UBUNTU-CVE-2026-101278",
"products": [
{
"name": {
"value": "opendmarc",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.3.1+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.3.1+dfsg-3",
"evidence": "/affected/0/versions"
},
{
"value": "1.3.1+dfsg-3ubuntu0.1~esm1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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},
"prerequisites": [],
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"affected_versions": [
{
"value": "1.3.2-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.2-3",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.2-3ubuntu0.1",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.2-3ubuntu0.2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "opendmarc",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "1.3.2-6",
"evidence": "/affected/2/versions"
},
{
"value": "1.3.2-7",
"evidence": "/affected/2/versions"
},
{
"value": "1.3.2-7ubuntu0.1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
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"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.4.0~beta1+dfsg-6",
"evidence": "/affected/3/versions"
},
{
"value": "1.4.1.1-1",
"evidence": "/affected/3/versions"
},
{
"value": "1.4.1.1-2",
"evidence": "/affected/3/versions"
},
{
"value": "1.4.2-1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "opendmarc",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.4.2-3",
"evidence": "/affected/4/versions"
},
{
"value": "1.4.2-4",
"evidence": "/affected/4/versions"
},
{
"value": "1.4.2-4.1build1",
"evidence": "/affected/4/versions"
},
{
"value": "1.4.2-4.1build2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "opendmarc",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.4.2-5.1build1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "opendmarc",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.4.2-5.1",
"evidence": "/affected/6/versions"
},
{
"value": "1.4.2-5.1build1",
"evidence": "/affected/6/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-101278",
"aliases": [
"UBUNTU-CVE-2026-101278"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "opendmarc",
"purl": "pkg:deb/ubuntu/opendmarc?arch=source&distro=esm-apps%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"1.3.1+dfsg-2",
"1.3.1+dfsg-3",
"1.3.1+dfsg-3ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101278.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libopendmarc2",
"binary_version": "1.3.1+dfsg-3ubuntu0.1~esm1"
},
{
"binary_name": "opendmarc",
"binary_version": "1.3.1+dfsg-3ubuntu0.1~esm1"
},
{
"binary_name": "rddmarc",
"binary_version": "1.3.1+dfsg-3ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "opendmarc",
"purl": "pkg:deb/ubuntu/opendmarc?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"1.3.2-2",
"1.3.2-3",
"1.3.2-3ubuntu0.1",
"1.3.2-3ubuntu0.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101278.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libopendmarc2",
"binary_version": "1.3.2-3ubuntu0.2"
},
{
"binary_name": "opendmarc",
"binary_version": "1.3.2-3ubuntu0.2"
},
{
"binary_name": "rddmarc",
"binary_version": "1.3.2-3ubuntu0.2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "opendmarc",
"purl": "pkg:deb/ubuntu/opendmarc?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"1.3.2-6",
"1.3.2-7",
"1.3.2-7ubuntu0.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101278.json"
},
"ecosystem_specific": {
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{
"binary_name": "libopendmarc2",
"binary_version": "1.3.2-7ubuntu0.1"
},
{
"binary_name": "opendmarc",
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}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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}
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}
],
"package": {
"name": "opendmarc",
"purl": "pkg:deb/ubuntu/opendmarc?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"1.4.0~beta1+dfsg-6",
"1.4.1.1-1",
"1.4.1.1-2",
"1.4.2-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101278.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libopendmarc2",
"binary_version": "1.4.2-1"
},
{
"binary_name": "opendmarc",
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}
]
}
},
{
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{
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}
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}
],
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"name": "opendmarc",
"purl": "pkg:deb/ubuntu/opendmarc?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"1.4.2-3",
"1.4.2-4",
"1.4.2-4.1build1",
"1.4.2-4.1build2"
],
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"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101278.json"
},
"ecosystem_specific": {
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{
"binary_name": "libopendmarc2t64",
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}
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"purl": "pkg:deb/ubuntu/opendmarc?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"1.4.2-5.1build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101278.json"
},
"ecosystem_specific": {
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{
"binary_name": "libopendmarc2t64",
"binary_version": "1.4.2-5.1build1"
},
{
"binary_name": "opendmarc",
"binary_version": "1.4.2-5.1build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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}
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],
"package": {
"name": "opendmarc",
"purl": "pkg:deb/ubuntu/opendmarc?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"1.4.2-5.1",
"1.4.2-5.1build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101278.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libopendmarc2t64",
"binary_version": "1.4.2-5.1build1"
},
{
"binary_name": "opendmarc",
"binary_version": "1.4.2-5.1build1"
}
]
}
}
],
"modified": "2026-10-17T12:57:53.570254846Z",
"provider": "osv",
"upstream": [
"CVE-2026-101278"
],
"references": [
"https://ubuntu.com/security/CVE-2026-101278",
"https://www.cve.org/CVERecord?id=CVE-2026-101278",
"https://vuldb.com/cve/CVE-2026-101278",
"https://vuldb.com/submit/918273",
"https://vuldb.com/vuln/411035",
"https://vuldb.com/vuln/411035/cti",
"https://xuyongzhe-vt.github.io/share/opendmarc-psl-wildcard-orgdomain.html"
]
},
"related_cves": [
{
"value": "CVE-2026-101278",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 357706,
"published_at": "2026-09-29T01:16:00+00:00"
}