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CVE-2026-8168

Denial-of-service vulnerability in the SVG parser and renderer impacts Qt

CVSS score

7.1

EPSS probability

—

Risk score

0.7

Published

20 h ago

Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

CVE-2026-8168: Denial of Service Vulnerability in Qt Group Qt QtSvg Module

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

Uncontrolled recursion exists in the SVG parser and renderer of the Qt SVG module (QtSvg) in Qt Group Qt. S0 This vulnerability allows attackers to cause a denial of service via a crafted SVG file containing deeply nested elements. S0

Why does it matter?

This vulnerability allows attackers to trigger application crashes and denial of service conditions by supplying a crafted SVG file. S0

What should be done?

  • Follow official vendor advisories
  • Check for updates
Chain of evidence and sources2 verified claims

Qt Group Qt içindeki QtSvg modülünde kontrolsüz özyineleme bulunmaktadır.

Özel hazırlanmış SVG dosyaları yığın tükenmesi yoluyla hizmet engeline yol açabilir.

Show the technical text from the sources

Uncontrolled recursion in the SVG parser and renderer of the Qt SVG module (QtSvg) in Qt Group Qt allows attackers to cause a denial of service (application crash via stack exhaustion) via a crafted SVG file with deeply nested elements.

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

CWE: CWE-674

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-8168 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1qtqt View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
7.1CVSS V4_0HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NCVE CNA
7.1CVSS V40HIGHCVSS: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:XNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

20 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

Fix rendering causing stack overflow

Open source
cvelist

Fix resolving paint servers going through stack overflow

Open source
cvelist

Fix stack overflow caused by recursive calls of destructors

Open source
cvelist

Add a test for deeply nested SVG files

Open source
cvelist

Add baseline test for deeply nested elements

Open source
cvelist

Speed up QSvgStructureNode::releaseDescendants()

Open source
cvelist

Fix stack overflow in detectCycles

Open source
cvelist

Use bottom tested loop in detectCycles()

Open source
cvelist

Apply and revert styles iteratively

Open source
cvelist

Propagate QSvgExtraStates variables to pattern and mask elements

Open source
reference

Fix rendering causing stack overflow

Open source
reference

Fix resolving paint servers going through stack overflow

Open source
Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-8168 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-8168 weaknesses.

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
User—

Official Sources and Advisories

CVSS Vector Radar Chart

7.1 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.RequiredConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

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
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User InteractionP
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)P
Availability (Erişilebilirlik)High

Yama doğrulandı

20 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

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Q
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qt

Weakness Type (CWE & CAPEC)

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CVE-2026-8168 · Denial-of-service vulnerability in the SVG…