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Fencer Intel
low 2.7

CVE-2026-114369 json

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

published 3d ago modified 2d ago also EUVD-2026-124346

cvss
2.7
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits
0
none known

Summary

Resource exhaustion vulnerability in the Qt Framework QWebSocket and QWebSocketServer classes of the Qt WebSockets module

Patch / fix

Is CVE-2026-114369 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-114369 updated cvss 5.3

qt: qt: Denial of Service via resource exhaustion in Qt WebSockets

  • Red Hat Enterprise Linux 8 qt5-qtwebsockets, qt5-qtwebsockets-examples Red Hat Enterprise Linux 9 qt5-qtwebsockets, qt5-qtwebsockets-examples Red Hat Enterprise Linux 10 qt6-qtwebsockets
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Hardened Images qt6 6.12.0-1.hum1, qt5 5.15.18-3.1.hum1
    affected: workaround, no fix available
  • Red Hat Enterprise Linux 7 qt5-qtwebsockets, qt5-qtwebsockets-examples
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-14).

CVSS scores

assigned by version score vector
CNA 4.0 2.7 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
CNA 4.0 2.7 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:A/V:X/RE:L/U:Clear

Affected products

  • qt Qt Framework

Classification

Weakness
  • CWE-407 Inefficient Algorithmic Complexity

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.