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Trusted Domain Project OpenDMARC Internationalized Domain Name opendmarc_policy.c opendmarc_policy_query_dmarc encoding error

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-100891

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-100891

OpenDMARC

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "cpes": [
      "cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*"
    ],
    "vendor": "Trusted Domain Project",
    "modules": [
      "Internationalized Domain Name Handler"
    ],
    "product": "OpenDMARC",
    "versions": [
      {
        "status": "affected",
        "version": "1.4.0"
      },
      {
        "status": "affected",
        "version": "1.4.1"
      },
      {
        "status": "affected",
        "version": "1.4.2"
      }
    ]
  }
]
Related CVEs
CVE-2026-100891

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#5207 · Revision 1
Added to Heist Feed
Publisher date
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