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JetBrains TeamCity Stored Cross-Site Scripting Vulnerability via Session Attribute

Vulnerability

A stored cross-site scripting vulnerability has been identified in JetBrains TeamCity versions prior to 2025.11. This issue allows for the injection of malicious scripts through session attributes, which are then executed in the context of the user.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user.

Remediation

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

Added: Dec 11, 2025, 4:18 PM
Updated: Dec 11, 2025, 4:18 PM

Vulnerability Rating

Custom Algorithm
spread
5.0
impact
1.7
exploitability
5.0
remediation
7.7
relevance
1.4
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.