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JetBrains TeamCity DOM-Based Cross-Site Scripting Vulnerability in OAuth Connections Tab

Vulnerability

A DOM-based cross-site scripting vulnerability has been identified in JetBrains TeamCity versions prior to 2025.11. This issue occurs on the OAuth connections tab, where improper handling of user input allows for the injection of malicious scripts that could be executed in the context of the user's browser.

Impact

Exploitation of this vulnerability allows for DOM-based cross-site scripting, where an attacker can inject and execute malicious scripts in the user's browser.

Remediation

Users can upgrade to JetBrains TeamCity version 2025.11 or later to address this vulnerability.

Added: Dec 16, 2025, 6:49 PM
Updated: Dec 16, 2025, 6:49 PM

Vulnerability Rating

Custom Algorithm
spread
5.0
impact
1.7
exploitability
6.4
remediation
7.7
relevance
1.6
threat
0.0
urgency
2.9
incentive
1.7

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.