CVE-2026-123278: Medium severity vulnerability

Published Nov 6, 2026

Updated

In JetBrains IntelliJ IDEA before 2026.3 code execution was possible via the unauthenticated JDBC worker RMI endpoint

Event History

Nov 6, 2026

CVE Published

via MITRE·10:27 AM

Data Sourced

via MITRE·10:27 AM

DescriptionSeverityWeakness

Frequently Asked Questions

What access and conditions does exploitation require?

The CVSS vector indicates an attacker needs local access, low privileges, and user interaction. Exploitation also has high attack complexity.

What is the potential security impact if exploitation succeeds?

The CVSS vector rates confidentiality, integrity, and availability impact as high. Code execution is described as possible through the unauthenticated JDBC worker RMI endpoint.

Which IntelliJ IDEA versions are affected?

JetBrains IntelliJ IDEA versions before 2026.3 are affected.

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