Intellij Idea
CVE-2021-30504
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
1DescriptionNVD
In JetBrains IntelliJ IDEA before 2021.1, DoS was possible because of unbounded resource allocation.
AnalysisAI
In JetBrains IntelliJ IDEA before 2021.1, DoS was possible because of unbounded resource allocation. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified as Uncontrolled Resource Consumption (CWE-400), which allows attackers to cause denial of service by exhausting system resources. In JetBrains IntelliJ IDEA before 2021.1, DoS was possible because of unbounded resource allocation. Affected products include: Jetbrains Intellij Idea. Version information: before 2021.1.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement rate limiting, set resource quotas, validate input sizes, use timeouts.
More in Intellij Idea
View allUnauthorized settings modification in JetBrains IntelliJ IDEA before 2026.2 allows attackers to alter configuration with
Authentication bypass via unauthorized input injection in JetBrains IntelliJ IDEA before 2026.2 allows remote attackers
Code execution via path traversal in JetBrains IntelliJ IDEA before 2026.1.4 and 2026.2 lets an attacker abuse improper
Arbitrary code injection in IntelliJ IDEA before version 2026.2 allows remote attackers to execute arbitrary code by con
In JetBrains IntelliJ IDEA before 2023.3.2 code execution was possible in Untrusted Project mode via a malicious plugin
In JetBrains IntelliJ IDEA before 2020.1, the license server could be resolved to an untrusted host in some cases. Rated
In several versions of JetBrains IntelliJ IDEA Ultimate, creating Task Servers configurations leads to saving a cleartex
In several JetBrains IntelliJ IDEA versions, creating remote run configurations of JavaEE application servers leads to s
In several JetBrains IntelliJ IDEA versions, a Spring Boot run configuration with the default setting allowed remote att
In several JetBrains IntelliJ IDEA Ultimate versions, an Application Server run configuration (for Tomcat, Jetty, Resin,
Command execution in JetBrains IntelliJ IDEA before 2026.1.1 allows a holder of the low-privileged guest user account to
Unauthorized file access in JetBrains IntelliJ IDEA before 2026.2 allows remote attackers to read files they should not
Same weakness CWE-400 – Uncontrolled Resource Consumption
View allSame technique Denial Of Service
View allShare
External POC / Exploit Code
Leaving vuln.today