CVE-2021-30504: JetBrains Intellij Idea

High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days.

In JetBrains IntelliJ IDEA before 2021.1, DoS was possible because of unbounded resource allocation.

Affected products

• JetBrains Intellij Idea: before 2021.1 (fixed in 2021.1)

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