{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-11573","assignerOrgId":"a59d8014-47c4-4630-ab43-e1b13cbe58e3","state":"PUBLISHED","assignerShortName":"Qt","dateReserved":"2026-06-08T10:01:44.921Z","datePublished":"2026-09-08T12:06:08.617Z","dateUpdated":"2026-09-11T09:31:34.532Z"},"containers":{"cna":{"providerMetadata":{"orgId":"a59d8014-47c4-4630-ab43-e1b13cbe58e3","shortName":"Qt","dateUpdated":"2026-09-11T09:31:34.532Z"},"title":"Uncontrolled recursion in QDomDocument/QDomNode serialization causes stack exhaustion (QtXml)","datePublic":"2024-12-05T00:00:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-674","description":"CWE-674: Uncontrolled Recursion","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-230","descriptions":[{"lang":"en","value":"CAPEC-230: Serialization Data with Nested Payloads"}]}],"affected":[{"vendor":"qt","product":"qt","repo":"https://code.qt.io/cgit/qt/qtbase.git","modules":["qtbase"],"versions":[{"status":"affected","version":"2.2.0","lessThan":"6.8.2","versionType":"python"}],"defaultStatus":"unaffected"}],"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*","versionStartIncluding":"2.2.0","versionEndExcluding":"6.8.2"}]}]}],"descriptions":[{"lang":"en","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<<(QTextStream&, const QDomNode&). Denial of service only — no code execution and no memory disclosure.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Uncontrolled recursion (CWE-674) in the QDomDocument/QDomNode serialization path of the Qt XML module (QtXml, qtbase). <code>QDomElementPrivate::save()</code> and <code>QDomNodePrivate::save()</code> 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 <code>QDomDocument::toByteArray()</code> (Qt 4.0 and later), <code>QDomDocument::toString()</code>, <code>QDomDocument::toCString()</code>, <code>QDomNode::save()</code>, and <code>operator&lt;&lt;(QTextStream&amp;, const QDomNode&amp;)</code>. Denial of service only — no code execution and no memory disclosure.</p>"}]}],"references":[{"url":"https://codereview.qt-project.org/c/qt/qtbase/+/606899","name":"QTBUG-131151 — Qt bug tracker entry","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":7.1,"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"}}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Claude AI (Sonnet 4.6) — draft only, requires human validation before submission"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-08T13:43:04.701549Z","id":"CVE-2026-11573","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-08T13:49:08.603Z"}}]}}