CVE-2026-63077
Received Received - Intake

Unauthenticated Remote Code Execution in JetBrains TeamCity

Publication date: 2026-07-27

Last updated on: 2026-07-27

Assigner: JetBrains s.r.o.

Description
In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol

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Meta Information

Published
2026-07-27
Last Modified
2026-07-27
Generated
2026-07-27
AI Q&A
2026-07-27
EPSS Evaluated
N/A
NVD
CVE-2026-63077
EUVD
EUVD-2026-49369

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
jetbrains teamcity to 2026.1.3 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

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Executive Summary

This vulnerability allows unauthenticated remote attackers to execute arbitrary code on JetBrains TeamCity servers before versions 2026.1.3 and 2025.11.7. The issue stems from a flaw in the agent polling protocol, which does not properly validate or sanitize incoming requests.

Impact Analysis

An attacker could gain full control over the TeamCity server, leading to unauthorized access to sensitive data, manipulation of build processes, or deployment of malicious code. This could disrupt operations and compromise the integrity of software development pipelines.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or health data, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations may face legal penalties, reputational damage, and loss of compliance certifications.

Mitigation Strategies

Update JetBrains TeamCity to version 2026.1.3 or later, or at least 2025.11.7 to address the unauthenticated remote code execution vulnerability.

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