Arbitrary Code Execution in JetBrains WebStorm Prior to 2026.2
CVE-2026-64804

8.4HIGH

Key Information:

Vendor

Jetbrains
Status
Webstorm
Vendor
CVE Published:
23 July 2026

What is CVE-2026-64804?

In JetBrains WebStorm versions prior to 2026.2, a security flaw allows arbitrary code execution without sufficient project trust. This vulnerability can be exploited through project-local linter tooling, posing a significant risk to users who have not yet granted the necessary trust level for their projects. It is essential for users to upgrade to the latest version to ensure their environments are secure from potential attacks.

Affected Version(s)

WebStorm 0 < 2026.2

References

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

CVSS V3.1

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.