{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-78253","assignerOrgId":"a59d8014-47c4-4630-ab43-e1b13cbe58e3","state":"PUBLISHED","assignerShortName":"Qt","dateReserved":"2026-08-24T07:14:59.859Z","datePublished":"2026-09-23T11:39:03.788Z","dateUpdated":"2026-09-23T14:36:41.208Z"},"containers":{"cna":{"providerMetadata":{"orgId":"a59d8014-47c4-4630-ab43-e1b13cbe58e3","shortName":"Qt","dateUpdated":"2026-09-23T11:39:03.788Z"},"title":"Denial-of-service (stack-exhaustion) vulnerability in QXmlStreamReader::readElementText() impacts Qt","datePublic":"2026-09-23T00:00:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-674","description":"CWE-674 Uncontrolled Recursion","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-230","descriptions":[{"lang":"en","value":"CAPEC-230 Serialized Data with Nested Payloads"}]}],"affected":[{"vendor":"qt","product":"qt","modules":["qtbase"],"versions":[{"status":"affected","version":"5.0.0","lessThanOrEqual":"6.8.8","versionType":"python"},{"status":"affected","version":"6.9.0","lessThanOrEqual":"6.11.1","versionType":"python"}],"defaultStatus":"unaffected"}],"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0.0","versionEndIncluding":"6.8.8"},{"vulnerable":true,"criteria":"cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9.0","versionEndIncluding":"6.11.1"}]}]}],"descriptions":[{"lang":"en","value":"Uncontrolled recursion in QXmlStreamReader::readElementText() in Qt Group Qt allows attackers to cause a denial of service (application crash via stack exhaustion) via a crafted XML document.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Uncontrolled recursion in <code>QXmlStreamReader::readElementText()</code> in Qt Group Qt allows attackers to cause a denial of service (application crash via stack exhaustion) via a crafted XML document.</p>"}]}],"references":[{"url":"https://codereview.qt-project.org/c/qt/qtbase/+/754345","name":"dev patch","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"UNREPORTED","Safety":"NEGLIGIBLE","Automatable":"NO","Recovery":"USER","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"LOW","providerUrgency":"GREEN","version":"4.0","baseSeverity":"LOW","baseScore":2.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:N/R:U/RE:L/U:Green"}}],"source":{"discovery":"INTERNAL"},"x_generator":{"engine":"Claude AI (Opus 5.5) - draft only, requires human validation before submission"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-23T14:35:55.687793Z","id":"CVE-2026-78253","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":"2026-09-23T14:36:41.208Z"}}]}}