Vulnerability-Lookup

OESA-2026-4495 (CVE-2026-11573)

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

Summary

qt6-qtbase security update

Details

Qt is a software toolkit for developing applications.

Security Fix(es):

Uncontrolled recursion (CWE-674) in the QDomDocument/QDomNode serialization path of the Qt XML module (QtXml, qtbase). QDomElementPrivate::save() and QDomNodePrivate::save() recurse mutually, consuming one stack frame per level of element nesting with no depth limit, no configurable bound and no error return. A document with deeply nested elements parses successfully but exhausts the call stack and terminates the process when serialized. Reachable via QDomDocument::toByteArray() (Qt 4.0 and later), QDomDocument::toString(), QDomDocument::toCString(), QDomNode::save(), and operator<<(QTextStream&, const QDomNode&). Denial of service only — no code execution and no memory disclosure.(CVE-2026-11573)

Severity

7.1 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-11573	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "qt6-qtbase-6.5.2-16.oe2403sp4.aarch64.rpm",
          "qt6-qtbase-debuginfo-6.5.2-16.oe2403sp4.aarch64.rpm",
          "qt6-qtbase-debugsource-6.5.2-16.oe2403sp4.aarch64.rpm",
          "qt6-qtbase-devel-6.5.2-16.oe2403sp4.aarch64.rpm",
          "qt6-qtbase-examples-6.5.2-16.oe2403sp4.aarch64.rpm",
          "qt6-qtbase-gui-6.5.2-16.oe2403sp4.aarch64.rpm",
          "qt6-qtbase-ibase-6.5.2-16.oe2403sp4.aarch64.rpm",
          "qt6-qtbase-mysql-6.5.2-16.oe2403sp4.aarch64.rpm",
          "qt6-qtbase-odbc-6.5.2-16.oe2403sp4.aarch64.rpm",
          "qt6-qtbase-postgresql-6.5.2-16.oe2403sp4.aarch64.rpm",
          "qt6-qtbase-private-devel-6.5.2-16.oe2403sp4.aarch64.rpm",
          "qt6-qtbase-static-6.5.2-16.oe2403sp4.aarch64.rpm"
        ],
        "noarch": [
          "qt6-qtbase-common-6.5.2-16.oe2403sp4.noarch.rpm"
        ],
        "src": [
          "qt6-qtbase-6.5.2-16.oe2403sp4.src.rpm"
        ],
        "x86_64": [
          "qt6-qtbase-6.5.2-16.oe2403sp4.x86_64.rpm",
          "qt6-qtbase-debuginfo-6.5.2-16.oe2403sp4.x86_64.rpm",
          "qt6-qtbase-debugsource-6.5.2-16.oe2403sp4.x86_64.rpm",
          "qt6-qtbase-devel-6.5.2-16.oe2403sp4.x86_64.rpm",
          "qt6-qtbase-examples-6.5.2-16.oe2403sp4.x86_64.rpm",
          "qt6-qtbase-gui-6.5.2-16.oe2403sp4.x86_64.rpm",
          "qt6-qtbase-ibase-6.5.2-16.oe2403sp4.x86_64.rpm",
          "qt6-qtbase-mysql-6.5.2-16.oe2403sp4.x86_64.rpm",
          "qt6-qtbase-odbc-6.5.2-16.oe2403sp4.x86_64.rpm",
          "qt6-qtbase-postgresql-6.5.2-16.oe2403sp4.x86_64.rpm",
          "qt6-qtbase-private-devel-6.5.2-16.oe2403sp4.x86_64.rpm",
          "qt6-qtbase-static-6.5.2-16.oe2403sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP4",
        "name": "qt6-qtbase",
        "purl": "pkg:rpm/openEuler/qt6-qtbase\u0026distro=openEuler-24.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.5.2-16.oe2403sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Qt is a software toolkit for developing applications.\r\n\r\nSecurity Fix(es):\n\nUncontrolled recursion (CWE-674) in the QDomDocument/QDomNode serialization path of the Qt XML module (QtXml, qtbase). QDomElementPrivate::save() and QDomNodePrivate::save() recurse mutually, consuming one stack frame per level of element nesting with no depth limit, no configurable bound and no error return. A document with deeply nested elements parses successfully but exhausts the call stack and terminates the process when serialized. Reachable via QDomDocument::toByteArray() (Qt 4.0 and later), QDomDocument::toString(), QDomDocument::toCString(), QDomNode::save(), and operator\u0026lt;\u0026lt;(QTextStream\u0026amp;, const QDomNode\u0026amp;). Denial of service only \u2014 no code execution and no memory disclosure.(CVE-2026-11573)",
  "id": "OESA-2026-4495",
  "modified": "2026-10-22T14:35:49Z",
  "published": "2026-10-22T14:35:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4495"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11573"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "qt6-qtbase security update",
  "upstream": [
    "CVE-2026-11573"
  ]
}

CVE-2026-11573 (GCVE-0-2026-11573)

Vulnerability from cvelistv5 – Published: 2026-09-08 12:06 – Updated: 2026-09-11 09:31

Title

Uncontrolled recursion in QDomDocument/QDomNode serialization causes stack exhaustion (QtXml)

Summary

Severity

7.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 13:43 UTC

CWE

CWE-674 - Uncontrolled Recursion

Assigner

Qt CNA under the mitre root

CNA scorecard A 92/100 over 15 records in the last 180 days details

References

1 reference

URL	Tags
https://codereview.qt-project.org/c/qt/qtbase/+/606899	patch

Impacted products

1 product

Vendor	Product	Version
qt	qt	Affected: 2.2.0 , < 6.8.2 (python) cpe:2.3:a:qt:qt::::::::

Date Public

2024-12-05 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-11573",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-08T13:43:04.701549Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-08T13:49:08.603Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "qtbase"
          ],
          "product": "qt",
          "repo": "https://code.qt.io/cgit/qt/qtbase.git",
          "vendor": "qt",
          "versions": [
            {
              "lessThan": "6.8.2",
              "status": "affected",
              "version": "2.2.0",
              "versionType": "python"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.8.2",
                  "versionStartIncluding": "2.2.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "datePublic": "2024-12-05T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eUncontrolled recursion (CWE-674) in the QDomDocument/QDomNode serialization path of the Qt XML module (QtXml, qtbase). \u003ccode\u003eQDomElementPrivate::save()\u003c/code\u003e and \u003ccode\u003eQDomNodePrivate::save()\u003c/code\u003e recurse mutually, consuming one stack frame per level of element nesting with no depth limit, no configurable bound and no error return. A document with deeply nested elements parses successfully but exhausts the call stack and terminates the process when serialized. Reachable via \u003ccode\u003eQDomDocument::toByteArray()\u003c/code\u003e (Qt 4.0 and later), \u003ccode\u003eQDomDocument::toString()\u003c/code\u003e, \u003ccode\u003eQDomDocument::toCString()\u003c/code\u003e, \u003ccode\u003eQDomNode::save()\u003c/code\u003e, and \u003ccode\u003eoperator\u0026lt;\u0026lt;(QTextStream\u0026amp;, const QDomNode\u0026amp;)\u003c/code\u003e. Denial of service only \u2014 no code execution and no memory disclosure.\u003c/p\u003e"
            }
          ],
          "value": "Uncontrolled recursion (CWE-674) in the QDomDocument/QDomNode serialization path of the Qt XML module (QtXml, qtbase). QDomElementPrivate::save() and QDomNodePrivate::save() recurse mutually, consuming one stack frame per level of element nesting with no depth limit, no configurable bound and no error return. A document with deeply nested elements parses successfully but exhausts the call stack and terminates the process when serialized. Reachable via QDomDocument::toByteArray() (Qt 4.0 and later), QDomDocument::toString(), QDomDocument::toCString(), QDomNode::save(), and operator\u003c\u003c(QTextStream\u0026, const QDomNode\u0026). Denial of service only \u2014 no code execution and no memory disclosure."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-230",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-230: Serialization Data with Nested Payloads"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-674",
              "description": "CWE-674: Uncontrolled Recursion",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-11T09:31:34.532Z",
        "orgId": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
        "shortName": "Qt"
      },
      "references": [
        {
          "name": "QTBUG-131151 \u2014 Qt bug tracker entry",
          "tags": [
            "patch"
          ],
          "url": "https://codereview.qt-project.org/c/qt/qtbase/+/606899"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Uncontrolled recursion in QDomDocument/QDomNode serialization causes stack exhaustion (QtXml)",
      "x_generator": {
        "engine": "Claude AI (Sonnet 4.6) \u2014 draft only, requires human validation before submission"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
    "assignerShortName": "Qt",
    "cveId": "CVE-2026-11573",
    "datePublished": "2026-09-08T12:06:08.617Z",
    "dateReserved": "2026-06-08T10:01:44.921Z",
    "dateUpdated": "2026-09-11T09:31:34.532Z",
    "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

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