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CVE-2026-97845 Uncontrolled recursion vulnerability in QXmlSimpleReader XML parsing impacts Qt

4.3 mediumEPSS 0.1%

Medium (4.3) in qt qt. EPSS 0.1% estimated probability of exploitation activity in the next 30 days.

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An uncontrolled recursion vulnerability has been discovered in the Qt QXmlSimpleReader XML parsing functionality of the Qt 5 Core Compatibility APIs module (Qt 6) and the Qt XML module (Qt 5).

Severity

CVSS 4.0

4.3 medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/U:Green
EPSS
0.1% estimated probability of exploitation activity in the next 30 days; 3rd percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-674 Uncontrolled Recursion
Published
Modified
Assigned by
Qt (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

Versions

From the CNA's record in the CVE List.

ProductAffected
qtfrom 5.0.0 before 6.8.10
qtfrom 6.9.0 before 6.11.3

Linux distributions

DistributionReleasePackageFixed inAdvisory
Ubuntu16.04:LTS, 18.04:LTS, 20.04:LTS and 2 moreqtstyleplugins-srcno fix listedUBUNTU-CVE-2026-97845

From the distributions' data via OSV.dev: Ubuntu Security Notices © Canonical Ltd., CC BY-SA 4.0. Modified: reformatted and linked to CVE records. Credits. On the distributions' own pages: Ubuntu.

Attack patterns (CAPEC)

  • CAPEC-230 Serialized Data with Nested Payloads Likelihood: Medium · Severity: High
  • CAPEC-231 Oversized Serialized Data Payloads Likelihood: Medium · Severity: High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

Check your stackJSON