CVE-2026-100254
Awaiting Analysis Awaiting Analysis - Queue

Authenticated Command Execution in JetBrains TeamCity via CRLF Injection

Publication date: 2026-09-30

Last updated on: 2026-09-30

Assigner: JetBrains s.r.o.

Description
In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 authenticated users could execute commands on Windows servers via CRLF injection in Pipeline Git connection settings

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-30
Last Modified
2026-09-30
Generated
2026-09-30
AI Q&A
2026-09-30
EPSS Evaluated
N/A
NVD
CVE-2026-100254
EUVD
EUVD-2026-89998

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
jetbrains teamcity to 2026.2 (exc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability in JetBrains TeamCity before versions 2026.2, 2026.1.4, and 2025.11.8 allows authenticated users to execute arbitrary commands on Windows servers. The attack occurs via CRLF injection in the Pipeline Git connection settings, enabling command execution through crafted input.

Impact Analysis

An attacker with valid credentials could exploit this to run malicious commands on the server, potentially leading to data theft, system compromise, or unauthorized access to sensitive information. The high CVSS score indicates significant risk.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Organizations may face fines or penalties for failing to secure systems adequately.

Mitigation Strategies

Update JetBrains TeamCity to version 2026.2, 2026.1.4, or 2025.11.8 or later to address the CRLF injection vulnerability in Pipeline Git connection settings.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-100254. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart