CVE-2026-64804 Code injection in WebStorm

High 8.4 Published 23 Jul 2026 Updated 24 Jul 2026

Attackers can execute arbitrary code via project-local linters before the user grants project trust in JetBrains WebStorm.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-64804?

CVE-2026-64804 is a high-severity code injection vulnerability in JetBrains WebStorm, published on 23 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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

Weakness: CWE-829

Which versions are affected by CVE-2026-64804?

It affects 1 product.

Products include Jetbrains Webstorm.

How do I fix CVE-2026-64804?

No fix has been published for CVE-2026-64804 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2026-64804 being exploited?

There is no known exploitation of CVE-2026-64804 in the wild and no public exploit code.

Sources

Also known as GHSA-x88m-wx27-x7m2.