CVE-2026-11573— QDomDocument::toByteArray() crashes when parsing svg file
Quick assessment
Affected
qt qt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 Qt 的 QDomDocument 序列化（QtXml）中存在不可控递归问题：处理深层嵌套的不可信 XML 时，可能因栈耗尽导致应用程序崩溃（仅造成拒绝服务 DoS，不涉及代码执行等更严重危害）。
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I. Basic Information for CVE-2026-11573
Vulnerability Information
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Vulnerability Title
QDomDocument::toByteArray() crashes when parsing svg file
Source: CVE Program / CVE List V5
Vulnerability Description
Uncontrolled recursion in Qt's QDomDocument serialization (QtXml) lets deeply nested untrusted XML crash the app via stack exhaustion (DoS only).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-11573
| # | POC Description | Source Link | Shenlong Link |
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Patches & Fixes for CVE-2026-11573 (1)
IV. Related Vulnerabilities
Same product: qt
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CVE-2026-15037
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Possible QML code injection in VectorImage component
Same vendor: qt
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CVE-2026-15037
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CVE-2026-9499
Out-of-bounds read in QTextCodec::codecForName() in Qt -
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Privilege escalation via forged API token creation in Axivio -
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Uncontrolled Search Path Element in Qt Network OpenSSL TLS b
Same weakness: CWE-674
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V. Comments for CVE-2026-11573
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