Vulnerability-Lookup

CVE-2026-100140 (GCVE-0-2026-100140)

Vulnerability from cvelistv5 – Published: 2026-11-02 11:44 – Updated: 2026-11-02 16:55

Title

Integer overflow vulnerability in XML parsing functionality of Qt5Compat impacts Qt

Summary

An integer overflow vulnerability in the Qt XML parsing (Qt5Compat / QXmlSimpleReader) functionality of Qt.

Severity

1.9 (Low)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/R:U/U:Green

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-11-02 16:54 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

Qt CNA under the mitre root

CNA scorecard A 93/100 over 27 records in the last 180 days details

References

5 references

URL	Tags
https://wiki.qt.io/List_of_known_vulnerabilities_…	vendor-advisory
https://codereview.qt-project.org/c/qt/qt5compat/…	patch
https://codereview.qt-project.org/c/qt/qt5compat/…	patch
https://codereview.qt-project.org/c/qt/qt5compat/…	patch
https://codereview.qt-project.org/c/qt/qt5compat/…	patch

Impacted products

1 product

Vendor	Product	Version	CPE status
qt	qt	Affected: 6.0.0 , ≤ 6.8.9 (python) Affected: 6.9.0 , ≤ 6.11.2 (python) Affected: 6.12.0 (python) cpe:2.3:a:qt:qt:::::::: cpe:2.3:a:qt:qt5compat::::::::

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-100140

Vulnerability from fkie_nvd - Published: 2026-11-02 12:16 - Updated: 2026-11-02 19:14

Severity

1.9 (Low) - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/R:U/U:Green

Summary

An integer overflow vulnerability in the Qt XML parsing (Qt5Compat / QXmlSimpleReader) functionality of Qt.

References

	URL	Tags
	a59d8014-47c4-4630-ab43-e1b13cbe58e3	https://codereview.qt-project.org/c/qt/qt5compat/+/764751
	a59d8014-47c4-4630-ab43-e1b13cbe58e3	https://codereview.qt-project.org/c/qt/qt5compat/+/768900
	a59d8014-47c4-4630-ab43-e1b13cbe58e3	https://codereview.qt-project.org/c/qt/qt5compat/+/768901
	a59d8014-47c4-4630-ab43-e1b13cbe58e3	https://codereview.qt-project.org/c/qt/qt5compat/+/768902
	a59d8014-47c4-4630-ab43-e1b13cbe58e3	https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-100140:

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "privilegesRequired": "NONE",
          "providerUrgency": "GREEN",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/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:U/V:X/RE:X/U:Green",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-100140",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-11-02T16:54:43.471958Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-11-02T12:16:58.910",
  "references": [
    {
      "source": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
      "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/764751"
    },
    {
      "source": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
      "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/768900"
    },
    {
      "source": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
      "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/768901"
    },
    {
      "source": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
      "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/768902"
    },
    {
      "source": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
      "url": "https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-100140:"
    }
  ],
  "sourceIdentifier": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
      "type": "Secondary"
    }
  ]
}

GHSA-7695-PQX4-VC24

Vulnerability from github – Published: 2026-11-02 12:30 – Updated: 2026-11-02 12:30

Details

An integer overflow vulnerability in the Qt XML parsing (Qt5Compat / QXmlSimpleReader) functionality of Qt.

Severity

1.9 (Low)


                  
                    CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/R:U/U:Green

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-100140"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-11-02T12:16:58Z",
    "severity": "LOW"
  },
  "details": "An integer overflow vulnerability in the Qt XML parsing (Qt5Compat / QXmlSimpleReader) functionality of Qt.",
  "id": "GHSA-7695-pqx4-vc24",
  "modified": "2026-11-02T12:30:21Z",
  "published": "2026-11-02T12:30:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100140"
    },
    {
      "type": "WEB",
      "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/764751"
    },
    {
      "type": "WEB",
      "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/768900"
    },
    {
      "type": "WEB",
      "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/768901"
    },
    {
      "type": "WEB",
      "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/768902"
    },
    {
      "type": "WEB",
      "url": "https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-100140:"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/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:U/V:X/RE:X/U:Green",
      "type": "CVSS_V4"
    }
  ]
}

UBUNTU-CVE-2026-100140 (CVE-2026-100140)

Vulnerability from osv_ubuntu – Published: 2026-11-03 00:00 – Updated: 2026-11-03 00:00 – Source website

Details

An integer overflow vulnerability in the Qt XML parsing (Qt5Compat / QXmlSimpleReader) functionality of Qt.

Severity

1.9 (Low)


                    
                      CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/R:U/U:Green

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-100140	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-100140	REPORT
	https://codereview.qt-project.org/c/qt/qt5compat/…	REPORT
	https://codereview.qt-project.org/c/qt/qt5compat/…	REPORT
	https://codereview.qt-project.org/c/qt/qt5compat/…	REPORT
	https://codereview.qt-project.org/c/qt/qt5compat/…	REPORT
	https://wiki.qt.io/List_of_known_vulnerabilities_…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libqt6core5compat6",
            "binary_version": "6.2.4-1"
          },
          {
            "binary_name": "qml6-module-qt5compat-graphicaleffects",
            "binary_version": "6.2.4-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "qt6-5compat",
        "purl": "pkg:deb/ubuntu/qt6-5compat@6.2.4-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.2.2-5",
        "6.2.4-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libqt6core5compat6",
            "binary_version": "6.4.2-4build3"
          },
          {
            "binary_name": "qml6-module-qt5compat-graphicaleffects",
            "binary_version": "6.4.2-4build3"
          },
          {
            "binary_name": "qt6-5compat-doc-html",
            "binary_version": "6.4.2-4build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "qt6-5compat",
        "purl": "pkg:deb/ubuntu/qt6-5compat@6.4.2-4build3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.4.2-3",
        "6.4.2-4",
        "6.4.2-4build1",
        "6.4.2-4build2",
        "6.4.2-4build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libqt6core5compat6",
            "binary_version": "6.11.2-1"
          },
          {
            "binary_name": "qml6-module-qt5compat-graphicaleffects",
            "binary_version": "6.11.2-1"
          },
          {
            "binary_name": "qt6-5compat-doc-html",
            "binary_version": "6.11.2-1"
          },
          {
            "binary_name": "qt6-5compat-examples",
            "binary_version": "6.11.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "qt6-5compat",
        "purl": "pkg:deb/ubuntu/qt6-5compat@6.11.2-1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.10.2-1",
        "6.10.2-3",
        "6.10.2-4",
        "6.11.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libqt6core5compat6",
            "binary_version": "6.10.2-1"
          },
          {
            "binary_name": "qml6-module-qt5compat-graphicaleffects",
            "binary_version": "6.10.2-1"
          },
          {
            "binary_name": "qt6-5compat-doc-html",
            "binary_version": "6.10.2-1"
          },
          {
            "binary_name": "qt6-5compat-examples",
            "binary_version": "6.10.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "qt6-5compat",
        "purl": "pkg:deb/ubuntu/qt6-5compat@6.10.2-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.9.2-1",
        "6.9.2-3",
        "6.9.2-3build1",
        "6.10.2-1"
      ]
    }
  ],
  "aliases": [],
  "details": "An integer overflow vulnerability in the Qt XML parsing (Qt5Compat / QXmlSimpleReader) functionality of Qt.",
  "id": "UBUNTU-CVE-2026-100140",
  "modified": "2026-11-03T00:00:00Z",
  "published": "2026-11-03T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-100140"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-100140"
    },
    {
      "type": "REPORT",
      "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/764751"
    },
    {
      "type": "REPORT",
      "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/768900"
    },
    {
      "type": "REPORT",
      "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/768901"
    },
    {
      "type": "REPORT",
      "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/768902"
    },
    {
      "type": "REPORT",
      "url": "https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-100140:"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/R:U/U:Green",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-100140"
  ]
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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-2026-100140 (GCVE-0-2026-100140)

FKIE_CVE-2026-100140

GHSA-7695-PQX4-VC24

UBUNTU-CVE-2026-100140 (CVE-2026-100140)

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Nomenclature

Vulnerability timeline

Related by attack behaviour