CVE-2026-64807

Analyzed Analyzed - Analysis Complete

Arbitrary Code Execution in JetBrains WebStorm via Linter Configuration

Publication date: 2026-07-23

Last updated on: 2026-07-28

Assigner: JetBrains s.r.o.

Description

In JetBrains WebStorm before 2026.2 arbitrary code execution was possible via a project-supplied linter configuration

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-23

Last Modified

2026-07-28

Generated

2026-08-12

AI Q&A

2026-07-23

EPSS Evaluated

2026-08-11

NVD

CVE-2026-64807

EUVD

EUVD-2026-48232

Affected Vendors & Products

Vendor	Product	Version / Range
jetbrains	webstorm	to 2026.2.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-829	The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere.

Attack-Flow Graph

Executive Summary

This vulnerability in JetBrains WebStorm before version 2026.2 allows arbitrary code execution through a project-supplied linter configuration. This means an attacker could craft a malicious linter config file that, when used by WebStorm, executes arbitrary code on the user's system.

Detection Guidance

This vulnerability involves arbitrary code execution via a project-supplied linter configuration in JetBrains WebStorm before 2026.2. To detect it, check the WebStorm version installed on your system. If it is below 2026.2, the system is vulnerable. Use commands like 'webstorm --version' or check the installation directory for version details.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run malicious code on your system. This could lead to data theft, system compromise, or further attacks within your network. Users running affected versions of WebStorm are at risk if they open untrusted projects.

Compliance Impact

The vulnerability allows arbitrary code execution via a project-supplied linter configuration in JetBrains WebStorm before 2026.2. This could potentially lead to unauthorized access or data breaches, which may impact compliance with standards like GDPR or HIPAA if sensitive data is exposed or modified.

Mitigation Strategies

Update JetBrains WebStorm to version 2026.2 or later to address the arbitrary code execution risk via project-supplied linter configuration.

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