CVE-2026-64815 JetBrains CVE debrief

Who should care

Users of JetBrains IntelliJ IDEA versions prior to 2026.2 should be aware of this high-severity vulnerability and take steps to mitigate the risk of arbitrary code injection attacks. This includes verifying affected deployments, reviewing official advisories, and applying patches or updates as recommended by the vendor.

Technical summary

CVE-2026-64815 is a high-severity vulnerability in JetBrains IntelliJ IDEA before 2026.2, allowing for arbitrary code injection via UI Designer form files. The vulnerability has a CVSS score of 8.1 and is classified as CWE-94. Limited details are available on affected scope and vendor remediation efforts. Users should verify their deployments and review official advisories for mitigation steps.

Defensive priority

High priority due to arbitrary code injection vulnerability in JetBrains IntelliJ IDEA before 2026.2.

Recommended defensive actions

• Inventory and verify JetBrains IntelliJ IDEA versions prior to 2026.2
• Apply vendor-recommended patches or updates
• Monitor for suspicious activity related to UI Designer form files
• Implement compensating controls for code injection attacks
• Review and validate affected scope within your environment

Evidence notes

Evidence from official sources indicates a high-severity vulnerability in JetBrains IntelliJ IDEA before 2026.2, allowing for arbitrary code injection via UI Designer form files. Limited details are available on affected scope and vendor remediation efforts. The CVE record was published on 2026-07-23T12:18:37.120Z and has not been modified since then. Users should consult official documentation and vendor advisories for specific guidance on mitigation and remediation.

Official resources