Critical Vulnerabilities in JetBrains IntelliJ IDEA and TeamCity Enable Remote Code Execution
JetBrains has released urgent security updates for IntelliJ IDEA and TeamCity to address several critical vulnerabilities that threaten remote development environments. The flaws could enable attackers to execute arbitrary code, modify build pipelines, and gain unauthorized access to files, making prompt patching essential for organizations using shared development setups.
In IntelliJ IDEA, the vulnerability tracked as CVE-2026-59792 stems from a directory traversal issue in the processing of workspace identifiers. This weakness may lead to remote code execution and received a maximum CVSS score of 9.8. The company has resolved the problem in versions 2026.1.4 and 2026.2.
TeamCity received multiple fixes addressing high-risk issues. CVE-2026-65907 allows code execution through specially crafted malicious Git repository configurations. Separately, CVE-2026-65906 permits attackers to escape the sandbox that protects Kotlin DSL scripts, potentially granting broader system access.
Additional vulnerabilities corrected in TeamCity include CVE-2026-59793, which enables arbitrary file access via the Perforce integration, and CVE-2026-59794, a persistent cross-site scripting flaw on the cloud profiles page. Both issues could be leveraged to compromise sensitive data or user sessions.
Administrators are strongly advised to apply the updates without delay. IntelliJ IDEA users should upgrade to the corrected releases, while TeamCity deployments should move to version 2026.1.2 or 2025.11.6 according to their current release line.
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