Vulnerability-Lookup

OESA-2026-4486 (CVE-2026-101201)

Vulnerability from osv_openeuler – Published: 2026-10-22 14:35 – Updated: 2026-10-22 14:35 – Source website

Summary

qt6-qt5compat security update

Details

Security Fix(es):

A malformed header in the binary file fed to QBinaryJson::fromBinaryData() can cause undefined behaviour because of out-of-bounds read.(CVE-2026-101201)

Severity

4.3 (Medium)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-101201	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "qt6-qt5compat-6.5.2-3.oe2403sp3.aarch64.rpm",
          "qt6-qt5compat-debuginfo-6.5.2-3.oe2403sp3.aarch64.rpm",
          "qt6-qt5compat-debugsource-6.5.2-3.oe2403sp3.aarch64.rpm",
          "qt6-qt5compat-devel-6.5.2-3.oe2403sp3.aarch64.rpm"
        ],
        "src": [
          "qt6-qt5compat-6.5.2-3.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "qt6-qt5compat-6.5.2-3.oe2403sp3.x86_64.rpm",
          "qt6-qt5compat-debuginfo-6.5.2-3.oe2403sp3.x86_64.rpm",
          "qt6-qt5compat-debugsource-6.5.2-3.oe2403sp3.x86_64.rpm",
          "qt6-qt5compat-devel-6.5.2-3.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "qt6-qt5compat",
        "purl": "pkg:rpm/openEuler/qt6-qt5compat\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.5.2-3.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": ".\r\n\r\nSecurity Fix(es):\n\nA malformed header in the binary file fed to QBinaryJson::fromBinaryData() can cause undefined behaviour because of out-of-bounds read.(CVE-2026-101201)",
  "id": "OESA-2026-4486",
  "modified": "2026-10-22T14:35:42Z",
  "published": "2026-10-22T14:35:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4486"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101201"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Amber",
      "type": "CVSS_V4"
    }
  ],
  "summary": "qt6-qt5compat security update",
  "upstream": [
    "CVE-2026-101201"
  ]
}

CVE-2026-101201 (GCVE-0-2026-101201)

Vulnerability from cvelistv5 – Published: 2026-10-20 08:20 – Updated: 2026-10-20 15:56

Title

QBinaryJson::fromBinaryData() integer overflow leading to OOB read

Summary

A malformed header in the binary file fed to QBinaryJson::fromBinaryData() can cause undefined behaviour because of out-of-bounds read.

Severity

4.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-20 15:56 UTC

CWE

CWE-190 - Integer Overflow or Wraparound
CWE-125 - Out-of-bounds Read

Assigner

Qt CNA under the mitre root

CNA scorecard A 91/100 over 13 records in the last 180 days details

References

3 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

Impacted products

1 product

Vendor	Product	Version
qt	qt	Affected: 5.0.0 , ≤ 6.8.8 (python) Affected: 6.9.0 , ≤ 6.11.2 (python) cpe:2.3:a:qt:qt:::::::: cpe:2.3:a:qt:qt5compat:::::::: cpe:2.3:a:qt:qtbase::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-101201",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-20T15:56:09.910743Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-20T15:56:20.735Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*",
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          ],
          "defaultStatus": "unaffected",
          "modules": [
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          "versions": [
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              "status": "affected",
              "version": "5.0.0",
              "versionType": "python"
            },
            {
              "lessThanOrEqual": "6.11.2",
              "status": "affected",
              "version": "6.9.0",
              "versionType": "python"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "A malformed header in the binary file fed to QBinaryJson::fromBinaryData() can cause undefined behaviour because of out-of-bounds read."
            }
          ],
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        }
      ],
      "impacts": [
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          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-92 Forced Integer Overflow"
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          ]
        },
        {
          "capecId": "CAPEC-540",
          "descriptions": [
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              "lang": "en",
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      ],
      "metrics": [
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            "Automatable": "NOT_DEFINED",
            "Recovery": "USER",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "UNREPORTED",
            "privilegesRequired": "NONE",
            "providerUrgency": "AMBER",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Amber",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
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          },
          "format": "CVSS",
          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-190",
              "description": "CWE-190 Integer Overflow or Wraparound",
              "lang": "en",
              "type": "CWE"
            },
            {
              "cweId": "CWE-125",
              "description": "CWE-125 Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-20T08:20:38.580Z",
        "orgId": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
        "shortName": "Qt"
      },
      "references": [
        {
          "name": "Qt Wiki: List of known vulnerabilities in Qt products",
          "tags": [
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        },
        {
          "name": "dev patch 1",
          "tags": [
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          "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/758925"
        },
        {
          "name": "dev patch 2",
          "tags": [
            "patch"
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          "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/759230"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
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      "title": "QBinaryJson::fromBinaryData() integer overflow leading to OOB read",
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    "datePublished": "2026-10-20T08:20:38.580Z",
    "dateReserved": "2026-09-28T09:34:42.241Z",
    "dateUpdated": "2026-10-20T15:56:20.735Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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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.
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