CVE-2026-123853: Security vulnerability

Published Nov 6, 2026

Updated

In JetBrains IntelliJ IDEA before 2026.3, 2026.2.2 code execution was possible in Safe Mode via project-controlled JVM options of the build process

Event History

Nov 6, 2026

CVE Published

via MITRE·04:10 PM

Data Sourced

via MITRE·04:10 PM

DescriptionSeverityWeakness

Data Sourced

via NVD·05:17 PM

DescriptionSeverityWeakness

Frequently Asked Questions

Who is exposed to this issue?

Users of JetBrains IntelliJ IDEA versions before 2026.2.2 who open projects in Safe Mode may be exposed if the project controls JVM options used by the build process.

Does Safe Mode prevent exploitation?

No. Code execution was possible even in Safe Mode through project-controlled JVM options of the build process.

What should teams do to remediate the issue?

Update JetBrains IntelliJ IDEA to version 2026.2.2 or later.

CVE-2026-123853: Security vulnerability

Event History

Frequently Asked Questions

Who is exposed to this issue?

Does Safe Mode prevent exploitation?

What should teams do to remediate the issue?

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Frequently Asked Questions

Who is exposed to this issue?

Does Safe Mode prevent exploitation?

What should teams do to remediate the issue?