CVE-2026-16762 QXmlStreamReader - Denial of Service

An application using QXmlStreamReader contains a denial of service caused by crafted XML documents leading to disproportionate CPU consumption during parsing, letting attackers make the application unresponsive, exploit requires attacker-influenced XML input.

CVSS base score 8.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.43% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
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/E:X/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:P/AU:Y/R:A/V:X/RE:L/U:X
Published
23 October 2026
Updated
25 October 2026
Weakness
CWE-407

Vendor fix

Update to the latest version of the affected application or library.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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