Bamboo Data Center RCE (CVE-2026-21570) in 9.6.012.1.0
CVE-2026-21570 Published on March 17, 2026
This High severity RCE (Remote Code Execution) vulnerability was introduced in versions 9.6.0, 10.0.0, 10.1.0, 10.2.0, 11.0.0, 11.1.0, 12.0.0, and 12.1.0 of Bamboo Data Center. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 8.6, allows an authenticated attacker to execute malicious code on the remote system. Atlassian recommends that Bamboo Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: Bamboo Data Center 9.6: Upgrade to a release greater than or equal to 9.6.24 Bamboo Data Center 10.2: Upgrade to a release greater than or equal to 10.2.16 Bamboo Data Center 12.1: Upgrade to a release greater than or equal to 12.1.3 See the release notes ([https://confluence.atlassian.com/bambooreleases/bamboo-release-notes-1189793869.html]). You can download the latest version of Bamboo Data Center from the download center ([https://www.atlassian.com/software/bamboo/download-archives]). This vulnerability was reported via our Atlassian (Internal) program.
Weakness Type
What is a Code Injection Vulnerability?
The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
CVE-2026-21570 has been classified to as a Code Injection vulnerability or weakness.
Products Associated with CVE-2026-21570
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Affected Versions
Atlassian Bamboo Data Center:- Version 12.1.0 to 12.1.2 is affected.
- Version 12.0.0 to 12.0.2 is affected.
- Version 11.0.0 to 11.0.8 is affected.
- Version 10.2.0 to 10.2.15 is affected.
- Version 10.1.0 to 10.1.1 is affected.
- Version 10.0.0 to 10.0.3 is affected.
- Version 9.6.1 to 9.6.23 is affected.
- Version 12.1.3 is unaffected.
- Version 10.2.16 is unaffected.
- Version 9.6.24 is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.