What is CVE-2026-64804?

CVE-2026-64804 is a high-severity vulnerability in Jetbrains Webstorm, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 8.4/10. Published 2026-07-23.

How severe is CVE-2026-64804?

High severity. CVSS v3 base score is 8.4 out of 10.

Vulnerability in Jetbrains Webstorm

CVE-2026-64804

In JetBrains WebStorm before 2026.2 arbitrary code execution was possible before granting project trust via project-local linter tooling

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Jetbrains Webstorm — versions 0

Weakness classification (CWE)

CWE-829 — Inclusion of Functionality from Untrusted Control Sphere

References

cve@jetbrains.com

Frequently asked questions

What is CVE-2026-64804?: CVE-2026-64804 is a high-severity vulnerability in Jetbrains Webstorm, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 8.4/10. Published 2026-07-23.
How severe is CVE-2026-64804?: High severity. CVSS v3 base score is 8.4 out of 10.