CVE-2026-8168Hinoki check available

Application crash via unbounded SVG tree recursion

Published Oct 19, 2026 · Updated Oct 19, 2026

Uncontrolled recursion in Qt Framework's QtSvg module allows attackers to crash applications via deeply nested SVG files. The SVG parser and renderer traverse document trees without depth limits during paint-server resolution, cycle detection, rendering, and destruction, exhausting the call stack. Exposure requires an application to process attacker-controlled SVG content and affects Qt Framework 4.1.0 through 6.8.8 and 6.9.0 through 6.11.1.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Uncontrolled recursion in Qt Framework's QtSvg module allows attackers to crash applications via deeply nested SVG files. The SVG parser and renderer traverse document trees without depth limits during paint-server resolution, cycle detection, rendering, and destruction, exhausting the call stack. Exposure requires an application to process attacker-controlled SVG content and affects Qt Framework 4.1.0 through 6.8.8 and 6.9.0 through 6.11.1.

The record

CVE
CVE-2026-8168
Published
Oct 19, 2026
Updated
Oct 19, 2026
Vendor
The Qt Company
Product
Qt Framework
Classifications
T1499.004
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.1.0 <6.8.9
  2. Affected versionversion=6.9.0 <6.11.2

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Qt Company · Qt Frameworkversion=4.1.0 <6.8.9; version=6.9.0 <6.11.2

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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