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4 vulnerabilities found for OpenDMARC by Trusted Domain Project
CVE-2026-100891 (GCVE-0-2026-100891)
Vulnerability from nvd – Published: 2026-09-28 00:15 – Updated: 2026-09-28 00:15
VLAI
EPSS
VEX
Title
Trusted Domain Project OpenDMARC Internationalized Domain Name opendmarc_policy.c opendmarc_policy_query_dmarc encoding error
Summary
A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this issue is the function opendmarc_policy_query_dmarc in the library libopendmarc/opendmarc_policy.c of the component Internationalized Domain Name Handler. Such manipulation leads to encoding error. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
CWE
- CWE-172 - Encoding Error
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/410841 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/410841/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-100891 | third-party-advisory |
| https://vuldb.com/submit/917215 | third-party-advisory |
| https://weitongli.com/share/opendmarc-ulabel-not-… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Trusted Domain Project | OpenDMARC |
Affected:
1.4.0
Affected: 1.4.1 Affected: 1.4.2 cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:* |
{
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"affected": [
{
"cpes": [
"cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*"
],
"modules": [
"Internationalized Domain Name Handler"
],
"product": "OpenDMARC",
"vendor": "Trusted Domain Project",
"versions": [
{
"status": "affected",
"version": "1.4.0"
},
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"type": "reporter",
"value": "WeitongLi (VulDB User)"
},
{
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}
],
"descriptions": [
{
"lang": "en",
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}
],
"metrics": [
{
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"baseScore": 6.9,
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{
"descriptions": [
{
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"description": "Encoding Error",
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},
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{
"name": "VDB-410841 | Trusted Domain Project OpenDMARC Internationalized Domain Name opendmarc_policy.c opendmarc_policy_query_dmarc encoding error",
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"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/vuln/410841"
},
{
"name": "VDB-410841 | CTI Indicators (IOB, IOC, IOA)",
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"signature",
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],
"url": "https://vuldb.com/vuln/410841/cti"
},
{
"name": "CVE-2026-100891 | CVE Analysis and Report",
"tags": [
"third-party-advisory"
],
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"tags": [
"third-party-advisory"
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},
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"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-09-27T10:00:24.000Z",
"value": "VulDB entry last update"
}
],
"title": "Trusted Domain Project OpenDMARC Internationalized Domain Name opendmarc_policy.c opendmarc_policy_query_dmarc encoding error",
"x_generator": [
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]
}
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"cveMetadata": {
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CVE-2026-100890 (GCVE-0-2026-100890)
Vulnerability from nvd – Published: 2026-09-28 00:00 – Updated: 2026-09-28 00:00
VLAI
EPSS
VEX
Title
Trusted Domain Project OpenDMARC SPF Parser opendmarc_spf.c opendmarc_spf_ipv6_explode null pointer dereference
Summary
A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_spf_ipv6_explode in the library libopendmarc/opendmarc_spf.c of the component SPF Parser. This manipulation of the argument cp causes null pointer dereference. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/410840 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/410840/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-100890 | third-party-advisory |
| https://vuldb.com/submit/917188 | third-party-advisory |
| https://weitongli.com/share/opendmarc-ip6-wild-po… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Trusted Domain Project | OpenDMARC |
Affected:
1.4.0
Affected: 1.4.1 Affected: 1.4.2 cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:* |
{
"containers": {
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*"
],
"modules": [
"SPF Parser"
],
"product": "OpenDMARC",
"vendor": "Trusted Domain Project",
"versions": [
{
"status": "affected",
"version": "1.4.0"
},
{
"status": "affected",
"version": "1.4.1"
},
{
"status": "affected",
"version": "1.4.2"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "WeitongLi (VulDB User)"
},
{
"lang": "en",
"type": "coordinator",
"value": "VulDB CNA Team"
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_spf_ipv6_explode in the library libopendmarc/opendmarc_spf.c of the component SPF Parser. This manipulation of the argument cp causes null pointer dereference. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way."
}
],
"metrics": [
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],
"problemTypes": [
{
"descriptions": [
{
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"description": "NULL Pointer Dereference",
"lang": "en",
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}
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},
{
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{
"cweId": "CWE-404",
"description": "Denial of Service",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-28T00:00:12.540Z",
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{
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},
{
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"permissions-required"
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},
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"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-09-27T10:00:20.000Z",
"value": "VulDB entry last update"
}
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"title": "Trusted Domain Project OpenDMARC SPF Parser opendmarc_spf.c opendmarc_spf_ipv6_explode null pointer dereference",
"x_generator": [
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}
CVE-2026-100891 (GCVE-0-2026-100891)
Vulnerability from cvelistv5 – Published: 2026-09-28 00:15 – Updated: 2026-09-28 00:15
VLAI
EPSS
VEX
Title
Trusted Domain Project OpenDMARC Internationalized Domain Name opendmarc_policy.c opendmarc_policy_query_dmarc encoding error
Summary
A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this issue is the function opendmarc_policy_query_dmarc in the library libopendmarc/opendmarc_policy.c of the component Internationalized Domain Name Handler. Such manipulation leads to encoding error. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
CWE
- CWE-172 - Encoding Error
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/410841 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/410841/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-100891 | third-party-advisory |
| https://vuldb.com/submit/917215 | third-party-advisory |
| https://weitongli.com/share/opendmarc-ulabel-not-… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Trusted Domain Project | OpenDMARC |
Affected:
1.4.0
Affected: 1.4.1 Affected: 1.4.2 cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:* |
{
"containers": {
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*"
],
"modules": [
"Internationalized Domain Name Handler"
],
"product": "OpenDMARC",
"vendor": "Trusted Domain Project",
"versions": [
{
"status": "affected",
"version": "1.4.0"
},
{
"status": "affected",
"version": "1.4.1"
},
{
"status": "affected",
"version": "1.4.2"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "WeitongLi (VulDB User)"
},
{
"lang": "en",
"type": "coordinator",
"value": "VulDB CNA Team"
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this issue is the function opendmarc_policy_query_dmarc in the library libopendmarc/opendmarc_policy.c of the component Internationalized Domain Name Handler. Such manipulation leads to encoding error. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way."
}
],
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"description": "Encoding Error",
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"name": "VDB-410841 | Trusted Domain Project OpenDMARC Internationalized Domain Name opendmarc_policy.c opendmarc_policy_query_dmarc encoding error",
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"vdb-entry",
"technical-description"
],
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},
{
"name": "VDB-410841 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
],
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},
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"tags": [
"third-party-advisory"
],
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},
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"third-party-advisory"
],
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},
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},
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"lang": "en",
"time": "2026-09-27T10:00:24.000Z",
"value": "VulDB entry last update"
}
],
"title": "Trusted Domain Project OpenDMARC Internationalized Domain Name opendmarc_policy.c opendmarc_policy_query_dmarc encoding error",
"x_generator": [
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]
}
},
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CVE-2026-100890 (GCVE-0-2026-100890)
Vulnerability from cvelistv5 – Published: 2026-09-28 00:00 – Updated: 2026-09-28 00:00
VLAI
EPSS
VEX
Title
Trusted Domain Project OpenDMARC SPF Parser opendmarc_spf.c opendmarc_spf_ipv6_explode null pointer dereference
Summary
A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_spf_ipv6_explode in the library libopendmarc/opendmarc_spf.c of the component SPF Parser. This manipulation of the argument cp causes null pointer dereference. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/410840 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/410840/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-100890 | third-party-advisory |
| https://vuldb.com/submit/917188 | third-party-advisory |
| https://weitongli.com/share/opendmarc-ip6-wild-po… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Trusted Domain Project | OpenDMARC |
Affected:
1.4.0
Affected: 1.4.1 Affected: 1.4.2 cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:* |
{
"containers": {
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*"
],
"modules": [
"SPF Parser"
],
"product": "OpenDMARC",
"vendor": "Trusted Domain Project",
"versions": [
{
"status": "affected",
"version": "1.4.0"
},
{
"status": "affected",
"version": "1.4.1"
},
{
"status": "affected",
"version": "1.4.2"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "WeitongLi (VulDB User)"
},
{
"lang": "en",
"type": "coordinator",
"value": "VulDB CNA Team"
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_spf_ipv6_explode in the library libopendmarc/opendmarc_spf.c of the component SPF Parser. This manipulation of the argument cp causes null pointer dereference. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
"version": "4.0"
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},
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