CVE-2026-16762: high-severity vulnerability in qt
Denial-of-service vulnerability in the Qt Core QXmlStream parser (QXmlStreamReader) impacts Qt
Published
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.5%
An attacker able to supply a crafted XML document to an application using QXmlStreamReader can cause disproportionate CPU consumption during parsing, making the application unresponsive (denial of service). Exploitation requires only that the application parse attacker-influenced XML; no authentication, privileges, or user interaction beyond ingesting the input are needed. There is no loss of confidentiality or integrity — no data disclosure, data modification, or code execution — and the impact is contained to the affected process.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/S:P/AU:Y/R:A/RE:L
Affected products
qt · qtRelated CVEs — qt
In the same product, most dangerous first.
CVE-2026-76151MEDIUMOut-of-bounds read (buffer over-read) vulnerability in HTTP Cache-Control response header parsing impacts Qt Framework (QtNetwork module)EPSS 0.7%CVE-2026-105946MEDIUMOut-of-bounds read vulnerability in NTLM authentication handling impacts QtEPSS 0.5%CVE-2026-78253LOWDenial-of-service (stack-exhaustion) vulnerability in QXmlStreamReader::readElementText() impacts QtEPSS 0.4%CVE-2026-19248HIGHUnbounded recursion vulnerability in the QDomNode destructor of Qt XML impacts QtEPSS 0.4%CVE-2026-8168HIGHDenial-of-service vulnerability in the SVG parser and renderer impacts QtEPSS 0.4%CVE-2026-11573HIGHUncontrolled recursion in QDomDocument/QDomNode serialization causes stack exhaustion (QtXml)EPSS 0.4%