CVE-2026-64804: In JetBrains WebStorm before 2026.2 arbitrary code execution was possible before granting project trust via project-local linter tooling

highCVSS 8.4CVE-2026-64804

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

Details

Source: NVD Recent CVEs (US · database · site)
Severity: high — CVSS 8.4
Published: 2026-07-23
Last updated: 2026-07-28
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-64804

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-648040.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-64804	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

high[NEW] [high] JetBrains WebStorm: Multiple vulnerabilities allow code executioncert-bund

Recent advisories for In JetBrains WebStorm

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

high[NEW] [high] JetBrains WebStorm: Multiple vulnerabilities allow code executioncert-bund · 2026-07-24
highCVE-2026-64807: In JetBrains WebStorm before 2026.2 arbitrary code execution was possible via a project-suppli…nvd · 2026-07-23
highCVE-2026-64806: In JetBrains WebStorm before 2026.2 arbitrary code execution was possible before granting proj…nvd · 2026-07-23
highCVE-2026-64805: In JetBrains WebStorm before 2026.2 arbitrary code execution was possible before granting proj…nvd · 2026-07-23