What’s Vulnerable › Vulnerabilities

CVE-2021-31897

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-11 · updated 2026-06-17

Description

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

How to fix

Upgrade to a fixed version: JetBrains WebStorm 2021.1. Check the vendor advisory for mitigations.

References

• https://blog.jetbrains.com
• https://blog.jetbrains.com/blog/2021/05/07/jetbrains-security-bulletin-q1-2021/
• https://blog.jetbrains.com
• https://blog.jetbrains.com/blog/2021/05/07/jetbrains-security-bulletin-q1-2021/

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