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CVE-2026-114369— Security Issue CVE-2026-114369 - Resource exhaustion (denial of service) vulnerability in the WebSocket handshake handling of QWebSocket and QWebSocketServer impacts Qt Framework

Quick assessment

Affected
qt Qt Framework
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.

Qt WebSockets 模块中的 Qt Framework 的 QWebSocket 和 QWebSocketServer 类存在资源耗尽漏洞。

CVSS 2.7 · Low

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-114369

Vulnerability Information
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Vulnerability Title
Security Issue CVE-2026-114369 - Resource exhaustion (denial of service) vulnerability in the WebSocket handshake handling of QWebSocket and QWebSocketServer impacts Qt Framework
Source: CVE Program / CVE List V5
Vulnerability Description
Resource exhaustion vulnerability in the Qt Framework QWebSocket and QWebSocketServer classes of the Qt WebSockets module
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/R:A/RE:L/U:Clear
Source: CVE Program / CVE List V5
Vulnerability Type
算法复杂性
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
qt Qt Framework 5.15.0 ~ 6.8.9 cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-114369

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-114369

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Other References for CVE-2026-114369 (4)

Same Patch Batch · qt · 2026-11-12 · 3 CVEs total

CVE-2026-97845 4.3 MEDIUM Uncontrolled recursion vulnerability in QXmlSimpleReader XML parsing impacts Qt
CVE-2026-82292 1.9 LOW NULL pointer dereference vulnerability in QDomDocument::setContent() XML parsing impacts Q

IV. Related Vulnerabilities

Same product: Qt Framework
Same vendor: qt
Same weakness: CWE-407