---
title: "CVE-2026-100256: JetBrains IntelliJ IDEA - Remote Code Execution"
description: "JetBrains IntelliJ IDEA < 2026.2.3 contains a remote code execution caused by unsafe Structural Search script constraints in untrusted projects, letting attackers execute arbitrary code remotely, exploit requires untrusted project context."
url: https://panop.io/threat-heartbeat/CVE-2026-100256/
---

# CVE-2026-100256 JetBrains IntelliJ IDEA - Remote Code Execution

JetBrains IntelliJ IDEA < 2026.2.3 contains a remote code execution caused by unsafe Structural Search script constraints in untrusted projects, letting attackers execute arbitrary code remotely, exploit requires untrusted project context.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.13% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-100256)

## Details

Type

Remote Code Execution

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Published

30 September 2026

Updated

15 October 2026

Weakness

[CWE-829](https://cwe.mitre.org/data/definitions/829.html)

## Vendor fix

Update to version 2026.2.3 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-100256](https://nvd.nist.gov/vuln/detail/CVE-2026-100256)
- [https://www.jetbrains.com/privacy-security/issues-fixed/](https://www.jetbrains.com/privacy-security/issues-fixed/)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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