CVE-2026-64804: CWE-829 in JetBrains WebStorm
In JetBrains WebStorm before 2026.2 arbitrary code execution was possible before granting project trust via project-local linter tooling
AI Analysis
Technical Summary
This vulnerability (CVE-2026-64804) affects JetBrains WebStorm versions prior to 2026.2. It allows an attacker to execute arbitrary code on the user's system by leveraging project-local linter tooling before the user grants trust to the project. The flaw is classified under CWE-829, which involves inclusion of functionality from untrusted control spheres. The CVSS v3.1 score is 8.4, indicating a high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is available at this time, and the product is not a cloud service, so remediation depends on user action once a fix is released.
Potential Impact
Successful exploitation can lead to arbitrary code execution on the affected system without requiring user interaction beyond opening an untrusted project. This compromises confidentiality, integrity, and availability of the system running WebStorm. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should avoid opening untrusted projects or disable project-local linter tooling if possible to reduce risk.
CVE-2026-64804: CWE-829 in JetBrains WebStorm
Description
In JetBrains WebStorm before 2026.2 arbitrary code execution was possible before granting project trust via project-local linter tooling
CVSS v3.1
Score 8.4high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-64804) affects JetBrains WebStorm versions prior to 2026.2. It allows an attacker to execute arbitrary code on the user's system by leveraging project-local linter tooling before the user grants trust to the project. The flaw is classified under CWE-829, which involves inclusion of functionality from untrusted control spheres. The CVSS v3.1 score is 8.4, indicating a high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is available at this time, and the product is not a cloud service, so remediation depends on user action once a fix is released.
Potential Impact
Successful exploitation can lead to arbitrary code execution on the affected system without requiring user interaction beyond opening an untrusted project. This compromises confidentiality, integrity, and availability of the system running WebStorm. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should avoid opening untrusted projects or disable project-local linter tooling if possible to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-07-20T18:20:28.432Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a6207959c2644c7f80b6466
Added to database: 07/23/2026, 12:22:45 UTC
Last enriched: 07/23/2026, 12:38:59 UTC
Last updated: 07/24/2026, 04:52:45 UTC
Views: 5
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