CVE-2021-31897: JetBrains Webstorm

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

In JetBrains WebStorm before 2021.1, code execution without user confirmation was possible for untrusted projects.

Affected products

• JetBrains Webstorm: before 2021.1 (fixed in 2021.1)

Published 2021-05-11. Last modified 2026-06-17.