Trusted Domain Project OpenDMARC DMARC Record opendmarc_util.c opendmarc_util_cleanup off-by-one

{
  "id": "50ae0ff9f588e7593aa12fa617b2e0484dcf5af4bc622e49f84883d4acab1467",
  "url": "https://osv.dev/vulnerability/CVE-2026-101014",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Trusted Domain Project OpenDMARC DMARC Record opendmarc_util.c opendmarc_util_cleanup off-by-one",
    "summary": "A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_util_cleanup in the library libopendmarc/opendmarc_util.c of the component DMARC Record Parser. Performing a manipulation results in off-by-one. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named b3b1da9264bc80324094a27c71e7369bdedc62ae. To fix this issue, it is recommended to deploy a patch.",
    "evidence": "osv:CVE-2026-101014",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-101014",
      "aliases": [
        "CVE-2026-101014"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "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"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/trusteddomainproject/opendmarc",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a29adab78ea9b6625066fdc482eae0ec6aa19ca6"
                },
                {
                  "fixed": "b3b1da9264bc80324094a27c71e7369bdedc62ae"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.4.0"
                      },
                      {
                        "last_affected": "1.4.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "1.4.1"
                      },
                      {
                        "last_affected": "1.4.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "1.4.2"
                      },
                      {
                        "last_affected": "1.4.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b3b1da9264bc80324094a27c71e7369bdedc62ae"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.4.0",
            "1.4.1",
            "1.4.2",
            "rel-opendmarc-1-4-0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-101014.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.858148783Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101014.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-101014",
        "https://vuldb.com/cve/CVE-2026-101014",
        "https://vuldb.com/submit/917100",
        "https://vuldb.com/vuln/410884",
        "https://vuldb.com/vuln/410884/cti",
        "https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae",
        "https://github.com/trusteddomainproject/OpenDMARC/pull/188",
        "https://github.com/trusteddomainproject/OpenDMARC/pull/344",
        "https://weitongli.com/share/opendmarc-cleanup-off-by-one.html"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-189",
          "CWE-193"
        ],
        "cna_assigner": "VulDB",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101014.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-101014",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 520279,
  "published_at": "2026-09-28T08:15:13.249+00:00"
}