{"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": "2026-09-23T11:39:03.788Z"}, "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"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "modules": ["qtbase"], "product": "qt", "vendor": "qt", "versions": [{"lessThanOrEqual": "6.8.8", "status": "affected", "version": "5.0.0", "versionType": "python"}, {"lessThanOrEqual": "6.11.1", "status": "affected", "version": "6.9.0", "versionType": "python"}]}], "source": "a59d8014-47c4-4630-ab43-e1b13cbe58e3"}], "cveTags": [], "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."}], "id": "CVE-2026-78253", "lastModified": "2026-09-23T12:17:07.063", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NO", "Recovery": "USER", "Safety": "NEGLIGIBLE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.3, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "UNREPORTED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "GREEN", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "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/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:N/AU:N/R:U/V:X/RE:L/U:Green", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "LOW"}, "source": "a59d8014-47c4-4630-ab43-e1b13cbe58e3", "type": "Secondary"}]}, "published": "2026-09-23T12:17:07.063", "references": [{"source": "a59d8014-47c4-4630-ab43-e1b13cbe58e3", "url": "https://codereview.qt-project.org/c/qt/qtbase/+/754345"}], "sourceIdentifier": "a59d8014-47c4-4630-ab43-e1b13cbe58e3", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-674"}], "source": "a59d8014-47c4-4630-ab43-e1b13cbe58e3", "type": "Secondary"}]}

{}

{}