Vulnerability-Lookup

CVE-2026-4739 (GCVE-0-2026-4739)

Vulnerability from cvelistv5 – Published: 2026-03-24 03:19 – Updated: 2026-03-24 14:34

Title

Integer overflow vulnerabilities in InsightSoftwareConsortium/ITK

Summary

Integer Overflow or Wraparound vulnerability in InsightSoftwareConsortium ITK (‎Modules/ThirdParty/Expat/src/expat modules).This issue affects ITK: before 2.7.1.

Severity

9.4 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/S:P/AU:Y/R:U/V:C/RE:M/U:Amber

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-24 14:34 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

GovTech CSG

References

1 reference

URL	Tags
https://github.com/InsightSoftwareConsortium/ITK/…	patch

Impacted products

1 product

Vendor	Product	Version	CPE status
InsightSoftwareConsortium	ITK	Affected: 0 , < 2.7.1 (git)	guessed

Credits

TITAN Team (titancaproject@gmail.com)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-4739

Vulnerability from fkie_nvd - Published: 2026-03-24 04:17 - Updated: 2026-06-17 10:57

Severity

9.4 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/S:P/AU:Y/R:U/V:C/RE:M/U:Amber

Summary

Integer Overflow or Wraparound vulnerability in InsightSoftwareConsortium ITK (‎Modules/ThirdParty/Expat/src/expat modules).This issue affects ITK: before 2.7.1.

References

	URL	Tags
	cve_disclosure@tech.gov.sg	https://github.com/InsightSoftwareConsortium/ITK/pull/5351

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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GHSA-9VXH-WWMC-C2M7

Vulnerability from github – Published: 2026-03-24 06:31 – Updated: 2026-03-24 06:31

Details

Integer Overflow or Wraparound vulnerability in InsightSoftwareConsortium ITK (‎Modules/ThirdParty/Expat/src/expat modules).This issue affects ITK: before 2.7.1.

Severity

9.4 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/S:P/AU:Y/R:U/V:C/RE:M/U:Amber

Show details on source website

JSON

To clipboard

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    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-24T04:17:29Z",
    "severity": "CRITICAL"
  },
  "details": "Integer Overflow or Wraparound vulnerability in InsightSoftwareConsortium ITK (\u200eModules/ThirdParty/Expat/src/expat modules).This issue affects ITK: before 2.7.1.",
  "id": "GHSA-9vxh-wwmc-c2m7",
  "modified": "2026-03-24T06:31:13Z",
  "published": "2026-03-24T06:31:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4739"
    },
    {
      "type": "WEB",
      "url": "https://github.com/InsightSoftwareConsortium/ITK/pull/5351"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/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:P/AU:Y/R:U/V:C/RE:M/U:Amber",
      "type": "CVSS_V4"
    }
  ]
}

MSRC_CVE-2026-4739

Vulnerability from csaf_microsoft - Published: 2026-03-02 00:00 - Updated: 2026-04-15 01:41

Summary

Integer overflow vulnerabilities in InsightSoftwareConsortium/ITK

Scope

1 vulnerability in this advisory, including CVE-2026-4739.

CVE-2026-4739

Known not affected: 1 product

Open the full advisory

UBUNTU-CVE-2026-4739 (CVE-2026-4739)

Vulnerability from osv_ubuntu – Published: 2026-03-24 04:17 – Updated: 2026-09-05 03:56 – Source website

Details

Integer Overflow or Wraparound vulnerability in InsightSoftwareConsortium ITK (‎Modules/ThirdParty/Expat/src/expat modules).This issue affects ITK: before 2.7.1.

Severity

9.4 (Critical)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/S:P/AU:Y/R:U/V:C/RE:M/U:Amber

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-4739	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-4739	REPORT
	https://github.com/InsightSoftwareConsortium/ITK/…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "matanza",
            "binary_version": "0.13+ds2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "matanza",
        "purl": "pkg:deb/ubuntu/matanza@0.13+ds2-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.13+ds1-6",
        "0.13+ds2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "matanza",
            "binary_version": "0.13+ds2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "matanza",
        "purl": "pkg:deb/ubuntu/matanza@0.13+ds2-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.13+ds2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "matanza",
            "binary_version": "0.13+ds2-1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "matanza",
        "purl": "pkg:deb/ubuntu/matanza@0.13+ds2-1build2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
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        "0.13+ds2-1build1",
        "0.13+ds2-1build2"
      ]
    },
    {
      "ecosystem_specific": {
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          {
            "binary_name": "cadaver",
            "binary_version": "0.26+dfsg-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "cadaver",
        "purl": "pkg:deb/ubuntu/cadaver@0.26+dfsg-2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.26+dfsg-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "expat",
            "binary_version": "2.7.1-2ubuntu0.2"
          },
          {
            "binary_name": "libexpat1",
            "binary_version": "2.7.1-2ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "expat",
        "purl": "pkg:deb/ubuntu/expat@2.7.1-2ubuntu0.2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.7.1-1",
        "2.7.1-2",
        "2.7.1-2ubuntu0.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "matanza",
            "binary_version": "0.13+ds2-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "matanza",
        "purl": "pkg:deb/ubuntu/matanza@0.13+ds2-2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.13+ds2-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "swish-e",
            "binary_version": "2.4.7-7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "swish-e",
        "purl": "pkg:deb/ubuntu/swish-e@2.4.7-7?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
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        "2.4.7-6.3",
        "2.4.7-6.3build1",
        "2.4.7-7"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "tdom",
            "binary_version": "0.9.5.1-3"
          }
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      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "tdom",
        "purl": "pkg:deb/ubuntu/tdom@0.9.5.1-3?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
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            }
          ],
          "type": "ECOSYSTEM"
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      ],
      "versions": [
        "0.9.5.1-2",
        "0.9.5.1-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwbxml2-1",
            "binary_version": "0.11.10+dfsg-2"
          },
          {
            "binary_name": "libwbxml2-utils",
            "binary_version": "0.11.10+dfsg-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "wbxml2",
        "purl": "pkg:deb/ubuntu/wbxml2@0.11.10+dfsg-2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.11.10+dfsg-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxmlrpc-c++9",
            "binary_version": "1.59.03-10.1"
          },
          {
            "binary_name": "libxmlrpc-core-c3t64",
            "binary_version": "1.59.03-10.1"
          },
          {
            "binary_name": "libxmlrpc-util4",
            "binary_version": "1.59.03-10.1"
          },
          {
            "binary_name": "xmlrpc-api-utils",
            "binary_version": "1.59.03-10.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "xmlrpc-c",
        "purl": "pkg:deb/ubuntu/xmlrpc-c@1.59.03-10.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.59.03-7",
        "1.59.03-9",
        "1.59.03-10",
        "1.59.03-10.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "matanza",
            "binary_version": "0.13+ds2-2build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "matanza",
        "purl": "pkg:deb/ubuntu/matanza@0.13+ds2-2build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.13+ds2-2",
        "0.13+ds2-2build1"
      ]
    }
  ],
  "aliases": [],
  "details": "Integer Overflow or Wraparound vulnerability in InsightSoftwareConsortium ITK (\u200eModules/ThirdParty/Expat/src/expat modules).This issue affects ITK: before 2.7.1.",
  "id": "UBUNTU-CVE-2026-4739",
  "modified": "2026-09-05T03:56:49Z",
  "published": "2026-03-24T04:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-4739"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-4739"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/InsightSoftwareConsortium/ITK/pull/5351"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/S:P/AU:Y/R:U/V:C/RE:M/U:Amber",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-4739"
  ]
}

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-2026-4739 (GCVE-0-2026-4739)

FKIE_CVE-2026-4739

GHSA-9VXH-WWMC-C2M7

MSRC_CVE-2026-4739

UBUNTU-CVE-2026-4739 (CVE-2026-4739)

Tags

Sightings

Nomenclature

Related by attack behaviour