Medium

DEBIAN-CVE-2026-101278

Type: advisorySource: OSV1 source record

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.

Announced 29 Sept 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-101278

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: osv:DEBIAN-CVE-2026-101278

opendmarc

Source reference: /affected/0/package/name

Affected versions: 1.4.2-2
Source reference: /affected/0/versions
1.4.2-3
Source reference: /affected/0/versions
1.4.2-4
Source reference: /affected/0/versions
1.4.2-4.1
Source reference: /affected/0/versions
1.4.2-4.1~exp1
Source reference: /affected/0/versions
1.4.2-5
Source reference: /affected/0/versions
1.4.2-5.1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

opendmarc

Source reference: /affected/1/package/name

Affected versions: 1.4.2-5
Source reference: /affected/1/versions
1.4.2-5.1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

opendmarc

Source reference: /affected/2/package/name

Affected versions: 1.4.2-5
Source reference: /affected/2/versions
1.4.2-5.1
Source reference: /affected/2/versions
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.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "opendmarc",
      "purl": "pkg:deb/debian/opendmarc?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.4.2-2",
      "1.4.2-3",
      "1.4.2-4",
      "1.4.2-4.1",
      "1.4.2-4.1~exp1",
      "1.4.2-5",
      "1.4.2-5.1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-101278.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "opendmarc",
      "purl": "pkg:deb/debian/opendmarc?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.4.2-5",
      "1.4.2-5.1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-101278.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "opendmarc",
      "purl": "pkg:deb/debian/opendmarc?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1.4.2-5",
      "1.4.2-5.1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-101278.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Related CVEs: CVE-2026-101278
Source reference: /upstream

Publisher severity

low

Source reference: /severity/0/score

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

CVE-2026-101278 · Medium

OpenDMARC

Event: #67706 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 21:14:28 GMT
Publisher date: Tue, 29 Sep 2026 01:16:43 GMT

Read the original announcement

Revision history

25 Oct 2026DEBIAN-CVE-2026-101278 · Revision 1Source updated