In multiple locations, there is a possible out of bounds read/write due to an incorrect bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Remote Code Execution via Terraform File Watchers in JetBrains IntelliJ IDEA

In JetBrains IntelliJ IDEA before 2026.3 code execution was possible in untrusted projects via the Terraform File Watchers

Missing Host Name Verification in JetBrains IntelliJ IDEA TLS Connections

In JetBrains IntelliJ IDEA before 2026.3 host name verification was missing for server TLS certificates

In JetBrains IntelliJ IDEA before 2026.3 command execution was possible via control characters in terminal command completion

Blind SSRF via Remote JSON Schema References in JetBrains IntelliJ IDEA

In JetBrains IntelliJ IDEA before 2026.3 blind SSRF was possible via remote references in JSON Schema validation

IntelliJ IDEA Path Traversal via JSON Schema References in Untrusted Projects

In JetBrains IntelliJ IDEA before 2026.3 path traversal was possible via JSON Schema references in untrusted projects

Server‑Side Request Forgery via Custom Plugin Repositories in JetBrains IntelliJ IDEA 2026.2 and Earlier

In JetBrains IntelliJ IDEA before 2026.3 sSRF was possible via custom plugin repositories

Untrusted Projects May Alter GPG Agent Configuration in IntelliJ IDEA

In JetBrains IntelliJ IDEA before 2026.3 untrusted projects could trigger changes to GPG agent configuration

Arbitrary File Write via Symlink during Plugin Extraction in JetBrains IntelliJ IDEA

In JetBrains IntelliJ IDEA before 2026.3 arbitrary file write was possible via symlinks when extracting plugin archives

Arbitrary Code Execution via Symlink in Imported Settings Archive

In JetBrains IntelliJ IDEA before 2026.3 code execution was possible via symlinks in an imported settings archive

HTML Injection via Remote Development Editor Tabs in IntelliJ IDEA

In JetBrains IntelliJ IDEA before 2026.3 hTML injection was possible in Remote Development editor tabs

Untrusted Project Document Import Enables Code Execution in IntelliJ IDEA

In JetBrains IntelliJ IDEA before 2026.3 code execution via the document import was possible in untrusted projects

Stored XSS via Markdown Preview in IntelliJ IDEA Built‑In Web Server

In JetBrains IntelliJ IDEA before 2026.3, 2026.2.4 stored XSS was possible on the built-in web server via Markdown preview

Kotlin Script Dependency Injection Vulnerability in IntelliJ IDEA

In JetBrains IntelliJ IDEA before 2026.3 kotlin scripts could trigger dependency downloads from arbitrary repositories in untrusted projects

Hidden Run Control in Markdown Preview Enables Command Execution

In JetBrains IntelliJ IDEA before 2026.3, 2026.2.4 command execution via a hidden run control in the Markdown preview was possible

IntelliJ IDEA Server Side Request Forgery via annotations.xml

In JetBrains IntelliJ IDEA before 2026.3, 2026.2.4 sSRF was possible via annotations.xml files during indexing

Enable Disabled Plugins via External Dependency Settings

In JetBrains IntelliJ IDEA before 2026.3 improper checks could enable disabled plugins via external dependency settings

XML External Entity Deserialization Vulnerability in IntelliJ IDEA HTTP Client

In JetBrains IntelliJ IDEA before 2026.3, 2026.2.4 xXE attack was possible via an XML response to an HTTP Client request

Untrusted Project Database Connections in JetBrains IntelliJ IDEA

In JetBrains IntelliJ IDEA before 2026.3 database connections could be established in untrusted projects

Command Injection through Untrusted Tomcat Run Configurations on WSL in IntelliJ IDEA

In JetBrains IntelliJ IDEA before 2026.3, 2026.2.1 command injection was possible in untrusted projects via Tomcat run configurations on WSL