Vulnerability-Lookup

CVE-2026-101014 (GCVE-0-2026-101014)

Vulnerability from cvelistv5 – Published: 2026-09-28 08:15 – Updated: 2026-09-28 12:43 X_Open Source

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.

Severity

6.9 (Medium)


                        
                          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

7.3 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

7.3 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-28 12:43 UTC

CWE

CWE-193 - Off-by-One
CWE-189 - Numeric Error

Assigner

VulDB mitre root

References

8 references

URL	Tags
https://vuldb.com/vuln/410884	vdb-entrytechnical-description
https://vuldb.com/vuln/410884/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-101014	third-party-advisory
https://vuldb.com/submit/917100	third-party-advisory
https://github.com/trusteddomainproject/OpenDMARC…	issue-trackingpatch
https://github.com/trusteddomainproject/OpenDMARC…	issue-trackingpatch
https://weitongli.com/share/opendmarc-cleanup-off…	exploit
https://github.com/trusteddomainproject/OpenDMARC…	patch

Impacted products

1 product

Vendor	Product	Version
Trusted Domain Project	OpenDMARC	Affected: 1.4.0 Affected: 1.4.1 Affected: 1.4.2 cpe:2.3:a:trusted_domain_project:opendmarc::::::::

Credits

WeitongLi (VulDB User)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-101014

Vulnerability from fkie_nvd - Published: 2026-09-28 09:17 - Updated: 2026-09-28 15:15

Severity

7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Summary

References

	URL	Tags
	cna@vuldb.com	https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae
	cna@vuldb.com	https://github.com/trusteddomainproject/OpenDMARC/pull/188
	cna@vuldb.com	https://github.com/trusteddomainproject/OpenDMARC/pull/344
	cna@vuldb.com	https://vuldb.com/cve/CVE-2026-101014
	cna@vuldb.com	https://vuldb.com/submit/917100
	cna@vuldb.com	https://vuldb.com/vuln/410884
	cna@vuldb.com	https://vuldb.com/vuln/410884/cti
	cna@vuldb.com	https://weitongli.com/share/opendmarc-cleanup-off-by-one.html

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "cpes": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-101014",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-28T12:43:08.404808Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-28T09:17:03.893",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/trusteddomainproject/OpenDMARC/pull/188"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/trusteddomainproject/OpenDMARC/pull/344"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/cve/CVE-2026-101014"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/917100"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/410884"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/410884/cti"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://weitongli.com/share/opendmarc-cleanup-off-by-one.html"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-189"
        },
        {
          "lang": "en",
          "value": "CWE-193"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-CCPV-XP3H-J99V

Vulnerability from github – Published: 2026-09-28 09:30 – Updated: 2026-09-28 09:30

Details

Severity

7.3 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

5.5 (Medium)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-101014"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-28T09:17:03Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-ccpv-xp3h-j99v",
  "modified": "2026-09-28T09:30:29Z",
  "published": "2026-09-28T09:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101014"
    },
    {
      "type": "WEB",
      "url": "https://github.com/trusteddomainproject/OpenDMARC/pull/188"
    },
    {
      "type": "WEB",
      "url": "https://github.com/trusteddomainproject/OpenDMARC/pull/344"
    },
    {
      "type": "WEB",
      "url": "https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-101014"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/917100"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/410884"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/410884/cti"
    },
    {
      "type": "WEB",
      "url": "https://weitongli.com/share/opendmarc-cleanup-off-by-one.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

UBUNTU-CVE-2026-101014 (CVE-2026-101014)

Vulnerability from osv_ubuntu – Published: 2026-09-28 09:17 – Updated: 2026-09-30 21:41 – Source website

Details

Severity

7.3 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

5.5 (Medium)


                    
                      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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-101014	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-101014	REPORT
	https://github.com/trusteddomainproject/OpenDMARC…	REPORT
	https://github.com/trusteddomainproject/OpenDMARC…	REPORT
	https://github.com/trusteddomainproject/OpenDMARC…	REPORT
	https://vuldb.com/cve/CVE-2026-101014	REPORT
	https://vuldb.com/submit/917100	REPORT
	https://vuldb.com/vuln/410884	REPORT
	https://vuldb.com/vuln/410884/cti	REPORT
	https://weitongli.com/share/opendmarc-cleanup-off…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libopendmarc2",
            "binary_version": "1.3.1+dfsg-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "opendmarc",
            "binary_version": "1.3.1+dfsg-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "rddmarc",
            "binary_version": "1.3.1+dfsg-3ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "opendmarc",
        "purl": "pkg:deb/ubuntu/opendmarc@1.3.1+dfsg-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.1+dfsg-2",
        "1.3.1+dfsg-3",
        "1.3.1+dfsg-3ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libopendmarc2",
            "binary_version": "1.3.2-3ubuntu0.2"
          },
          {
            "binary_name": "opendmarc",
            "binary_version": "1.3.2-3ubuntu0.2"
          },
          {
            "binary_name": "rddmarc",
            "binary_version": "1.3.2-3ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "opendmarc",
        "purl": "pkg:deb/ubuntu/opendmarc@1.3.2-3ubuntu0.2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.2-2",
        "1.3.2-3",
        "1.3.2-3ubuntu0.1",
        "1.3.2-3ubuntu0.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libopendmarc2",
            "binary_version": "1.3.2-7ubuntu0.1"
          },
          {
            "binary_name": "opendmarc",
            "binary_version": "1.3.2-7ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "opendmarc",
        "purl": "pkg:deb/ubuntu/opendmarc@1.3.2-7ubuntu0.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.2-6",
        "1.3.2-7",
        "1.3.2-7ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libopendmarc2",
            "binary_version": "1.4.2-1"
          },
          {
            "binary_name": "opendmarc",
            "binary_version": "1.4.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "opendmarc",
        "purl": "pkg:deb/ubuntu/opendmarc@1.4.2-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.0~beta1+dfsg-6",
        "1.4.1.1-1",
        "1.4.1.1-2",
        "1.4.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libopendmarc2t64",
            "binary_version": "1.4.2-4.1build2"
          },
          {
            "binary_name": "opendmarc",
            "binary_version": "1.4.2-4.1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "opendmarc",
        "purl": "pkg:deb/ubuntu/opendmarc@1.4.2-4.1build2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.2-3",
        "1.4.2-4",
        "1.4.2-4.1build1",
        "1.4.2-4.1build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libopendmarc2t64",
            "binary_version": "1.4.2-5.1build1"
          },
          {
            "binary_name": "opendmarc",
            "binary_version": "1.4.2-5.1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "opendmarc",
        "purl": "pkg:deb/ubuntu/opendmarc@1.4.2-5.1build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.2-5.1",
        "1.4.2-5.1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2026-101014",
  "modified": "2026-09-30T21:41:53Z",
  "published": "2026-09-28T09:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-101014"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-101014"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/trusteddomainproject/OpenDMARC/pull/188"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/trusteddomainproject/OpenDMARC/pull/344"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/cve/CVE-2026-101014"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/submit/917100"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/410884"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/410884/cti"
    },
    {
      "type": "REPORT",
      "url": "https://weitongli.com/share/opendmarc-cleanup-off-by-one.html"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "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"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-101014"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-101014 (GCVE-0-2026-101014)

FKIE_CVE-2026-101014

GHSA-CCPV-XP3H-J99V

UBUNTU-CVE-2026-101014 (CVE-2026-101014)

Tags

Sightings

Nomenclature

Related by attack behaviour