High

DEBIAN-CVE-2026-101281

Type: advisorySource: OSV1 source record

A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_sp2_find_mailfrom_domain of the file libopendmarc/opendmarc_spf.c of the component SPF Macro Handler. This manipulation causes improper authentication. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: c48a74c758677fc5272a73eff15ffdbf8afda1a6. Applying a patch is the recommended action to fix this issue.

Announced 29 Sept 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-101281

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-2026-101281

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-2026-101281.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-2026-101281.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-2026-101281.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Related CVEs: CVE-2026-101281
Source reference: /upstream

Publisher severity

medium

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-2026-101281 · High

OpenDMARC

Event: #67708 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 21:14:30 GMT
Publisher date: Tue, 29 Sep 2026 01:16:44 GMT

Read the original announcement

Revision history

25 Oct 2026DEBIAN-CVE-2026-101281 · Revision 1Source updated