CVE-2026-8168

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.40% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 34.4% of scored records. A rank, not a probability.

NVD base score

7.1 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

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/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:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-10-19.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-19 13:08Z9 DAYS AGO

Last updated

2026-10-19 14:27Z9 DAYS AGO

Reserved

2026-05-08

Assigning CNA

Qt

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

• CWE-674Uncontrolled RecursionClass
• CWE-770Allocation of Resources Without Limits or ThrottlingBase

Data version

5.2

Document digest

eefb921f5932b41bd48373ba9660c41e446b6bf2f39e8ecd1769f23bba3d0d5e

• wiki.qt.ioPropagate QSvgExtraStates variables to pattern and mask elementshttps://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-8168:vendor-advisory
• codereview.qt-project.orgFix rendering causing stack overflowhttps://codereview.qt-project.org/c/qt/qtsvg/+/730591patch
• codereview.qt-project.orgFix resolving paint servers going through stack overflowhttps://codereview.qt-project.org/c/qt/qtsvg/+/730501patch
• codereview.qt-project.orgFix stack overflow caused by recursive calls of destructorshttps://codereview.qt-project.org/c/qt/qtsvg/+/731257patch
• codereview.qt-project.orgAdd a test for deeply nested SVG fileshttps://codereview.qt-project.org/c/qt/qtsvg/+/730892patch
• codereview.qt-project.orgAdd baseline test for deeply nested elementshttps://codereview.qt-project.org/c/qt/qtsvg/+/733245patch
• codereview.qt-project.orgSpeed up QSvgStructureNode::releaseDescendants()https://codereview.qt-project.org/c/qt/qtsvg/+/738811patch
• codereview.qt-project.orgFix stack overflow in detectCycleshttps://codereview.qt-project.org/c/qt/qtsvg/+/730590patch
• codereview.qt-project.orgUse bottom tested loop in detectCycles()https://codereview.qt-project.org/c/qt/qtsvg/+/743488patch
• codereview.qt-project.orgApply and revert styles iterativelyhttps://codereview.qt-project.org/c/qt/qtsvg/+/748966patch
• codereview.qt-project.orgPropagate QSvgExtraStates variables to pattern and mask elementshttps://codereview.qt-project.org/c/qt/qtsvg/+/756512patch