CVE-2026-111094
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk31th percentile - higher than 31% of all known CVEs
Summary
JetBrains TeamCity before versions 2026.2, 2026.1.4, and 2025.11.8 contains a remote code execution vulnerability via a whitelist bypass in the build messages protocol. This may lead to arbitrary code execution on the server.
Risk Assessment
Remote code execution may allow an attacker to fully compromise the TeamCity server, including access to source code, credentials, and CI/CD infrastructure.
Recommendation
Update TeamCity to version 2026.2, 2026.1.4, 2025.11.8, or later. Restrict access to the TeamCity server and monitor for unusual activity.
Other vulnerabilities in JetBrains TeamCity
See all- CVE-2026-44413High
In JetBrains TeamCity versions before 2026.1 and 2025.11.5, authenticated users could expose the server API to unauthorized access.
- CVE-2026-63077CriticalActively exploited
In JetBrains TeamCity before versions 2026.1.3 and 2025.11.7, unauthenticated remote code execution is possible via the agent polling protocol.
- CVE-2026-65907Critical
In JetBrains TeamCity before 2026.1.2 and 2025.11.6, code execution in Git VCS roots was possible.
- CVE-2024-27198CriticalActively exploited
In JetBrains TeamCity before 2023.11.4, an authentication bypass vulnerability exists that allows performing admin actions without authorization.
- CVE-2023-42793CriticalActively exploited
In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible.
- CVE-2023-41249Medium
In JetBrains TeamCity versions before 2023.05.3, reflected XSS was possible during copying Build Step.
- CVE-2023-34225Medium
In JetBrains TeamCity versions before 2023.05, a stored XSS vulnerability was present in the NuGet feed page.
- CVE-2023-34220Medium
In JetBrains TeamCity versions before 2023.05, a stored XSS vulnerability was present in the Commit Status Publisher window.
- CVE-2023-34218Critical
In JetBrains TeamCity before version 2023.05, it was possible to bypass permission checks, allowing for the execution of admin actions.
- CVE-2026-111096Medium
In JetBrains TeamCity before 2026.2, 2026.1.4, and 2025.11.8, stored XSS in the classic build log was possible. Malicious content stored in the log can execute in the browser of a user viewing the log.
Original NVD description (English source)
In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 remote code execution via a whitelist bypass in the build messages protocol was possible
Vulnerability data from NVD (NIST) · CISA KEV · EPSS