OS Command Injection Vulnerability in Bamboo Data Center by Atlassian

CVE-2026-21571

What is CVE-2026-21571?

CVE-2026-21571 is a critical OS Command Injection vulnerability found in Bamboo Data Center, a continuous integration and deployment tool developed by Atlassian. This vulnerability affects specific versions of the software, potentially allowing an authenticated attacker to execute arbitrary commands on the server, thereby compromising the system's stability and integrity. With a CVSS score of 9.4, this vulnerability poses serious risks to organizations using Bamboo, as it can lead to remote code execution without requiring user interaction. Such capabilities can expose sensitive data, disrupt operations, and enable further malicious activities within the affected environment.

Potential impact of CVE-2026-21571

1. Compromise of Confidentiality: Since the vulnerability allows remote code execution, attackers may gain unauthorized access to sensitive information, leading to potential data breaches and loss of confidentiality.

2. Integrity Risks: An attacker exploiting this vulnerability could manipulate or modify application data, undermining the integrity of the software environment and potentially causing significant operational issues for organizations.

3. Availability Threats: The ability to execute commands remotely can disrupt services and lead to system downtime, affecting the availability of critical applications and projects managed through Bamboo Data Center.

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