Code Execution Vulnerability in JetBrains IntelliJ IDEA Product
CVE-2026-123853

7.8HIGH

Key Information:

Vendor

Jetbrains
Status
Intellij Idea
Vendor
CVE Published:
6 November 2026

What is CVE-2026-123853?

A vulnerability in JetBrains IntelliJ IDEA allows for arbitrary code execution in Safe Mode due to project-controlled JVM options during the build process. This issue affects users running IntelliJ IDEA versions prior to 2026.3 and 2026.2.2, potentially exposing their projects to malicious code execution through manipulated settings. It is crucial for users to update to the latest version to ensure their software environment remains secure.

Affected Version(s)

IntelliJ IDEA 0 < 2026.3, 2026.2.2

References

https://www.jetbrains.com/privacy-security/issues-fixed/

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.