{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.4.0"
              },
              {
                "last_affected": "1.4.0"
              },
              {
                "introduced": "1.4.1"
              },
              {
                "last_affected": "1.4.1"
              },
              {
                "introduced": "1.4.2"
              },
              {
                "last_affected": "1.4.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "a29adab78ea9b6625066fdc482eae0ec6aa19ca6"
            },
            {
              "fixed": "c48a74c758677fc5272a73eff15ffdbf8afda1a6"
            }
          ],
          "repo": "https://github.com/trusteddomainproject/opendmarc",
          "type": "GIT"
        }
      ],
      "versions": [
        "1.4.0",
        "1.4.1",
        "1.4.2"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulDB",
    "cwe_ids": [
      "CWE-287"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101281.json"
  },
  "details": "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.",
  "id": "CVE-2026-101281",
  "modified": "2026-10-01T03:30:24.895634231Z",
  "published": "2026-09-29T00:45:11.946Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101281.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101281"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/cve/CVE-2026-101281"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/submit/918284"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/vuln/411038"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/trusteddomainproject/OpenDMARC/issues/262"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/411038/cti"
    },
    {
      "type": "FIX",
      "url": "https://github.com/trusteddomainproject/OpenDMARC/commit/c48a74c758677fc5272a73eff15ffdbf8afda1a6"
    },
    {
      "type": "FIX",
      "url": "https://github.com/trusteddomainproject/OpenDMARC/pull/328"
    },
    {
      "type": "EVIDENCE",
      "url": "https://xuyongzhe-vt.github.io/share/opendmarc-spf-postmaster-macro.html"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Trusted Domain Project OpenDMARC SPF Macro opendmarc_spf.c opendmarc_sp2_find_mailfrom_domain improper authentication"
}