JETBRAINS WARNS OF CRITICAL TEAMCITY RCE FLAW

AI DESK■ 1 MIN READ

THU, JUL 30, 2026

■ AI-SUMMARIZED FROM 1 SOURCE ▸ TIMELINE

JetBrains has disclosed a critical authentication bypass vulnerability in TeamCity On-Premises that allows attackers to execute remote code. The flaw affects the company's continuous integration and deployment platform.

The vulnerability enables unauthenticated attackers to bypass security controls and gain unauthorized access to TeamCity instances. Once exploited, the flaw can be leveraged to achieve remote code execution on affected systems. TeamCity On-Premises users are urged to apply patches immediately. JetBrains has released security updates to address the issue across supported versions. The company recommends reviewing access logs for signs of exploitation and restricting network access to TeamCity instances to trusted networks where possible. Organizations relying on TeamCity for CI/CD pipelines should prioritize this update to prevent potential compromise of their build infrastructure. Cloud-based TeamCity versions are not affected by this vulnerability. JetBrains continues to investigate the scope and impact of the flaw.

■ SOURCES

► Bleeping Computer

■ SUMMARY WRITTEN BY AI FROM THE LINKS ABOVE

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JETBRAINS WARNS OF CRITICAL TEAMCITY RCE FLAW

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