CVE-2026-4739: Insightsoftwareconsortium Itk

Critical severity, CVSS 9.4. EPSS: 0.4% chance of exploitation in the next 30 days.

Integer Overflow or Wraparound vulnerability in InsightSoftwareConsortium ITK (‎Modules/ThirdParty/Expat/src/expat modules).This issue affects ITK: before 2.7.1.

Affected products

• Insightsoftwareconsortium Itk

Published 2026-03-24. Last modified 2026-06-17.