{"id":"CVE-2026-78253","title":"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.","summary":"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.","severity":"low","cvss":2.3,"cvssVector":"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","cwe":["CWE-674","CWE-776"],"vendor":"qt","product":"qt","affected":["qt >= 5.0.0 <= 6.8.8","qt >= 6.9.0 <= 6.11.1"],"patched":["hardened_images"],"published":"2026-09-23","updated":"2026-09-24","sourceUpdated":"2026-09-24T21:08:22.573","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-78253","references":[{"url":"https://codereview.qt-project.org/c/qt/qtbase/+/754345","label":"a59d8014-47c4-4630-ab43-e1b13cbe58e3"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-78253.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-78253"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2539372"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-78253"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78253"},{"url":"https://access.redhat.com/errata/RHSA-2026:59393"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00428,"epssPercentile":0.36854,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-23T14:35:55.687793Z"},"cvssSource":"cna","scores":{"cna":2.3,"vendor":4.7},"ingestedAt":"2026-09-23T12:24:04.183Z","slug":"CVE-2026-78253","body":"## Overview\n\nUncontrolled 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:59393** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-08-25 · [advisory](https://access.redhat.com/errata/RHSA-2026:59393)\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-09-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-78253.json)","depth":"sunlit","depthScore":13,"depthScoreParts":{"impact":12.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}