Threats Tagged 'cve-2026-11573'

CVE-2026-11573 is a denial of service vulnerability in the Qt XML module (QtXml, qtbase) caused by uncontrolled recursion in the QDomDocument/QDomNode serialization path. The functions QDomElementPrivate::save() and QDomNodePrivate::save() recursively call each other without depth limits, leading to stack exhaustion when serializing deeply nested XML documents. This vulnerability affects multiple specific versions of qtbase-opensource-src. It does not allow code execution or memory disclosure. Red Hat has issued a security advisory with updates to address this issue in Red Hat Enterprise Linux 9.8 and related products.

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.