Is CVE-2026-21570 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-21570 being exploited in the wild.

How severe is CVE-2026-21570?

High severity, with a CVSS score of 8.8, published 17 March 2026.

Which products and versions are affected?

Atlassian Bamboo Data Center 9.6.0 to 9.6.23, 10.0.0 to 10.0.3, 10.1.0 to 10.1.1, 10.2.0 to 10.2.15, 11.0.0 to 11.0.8, 11.1.0, 12.0.0 to 12.0.2, 12.1.0 to 12.1.2.

Is there a fix for CVE-2026-21570?

A patch was published on 2026-03-17: Bamboo Data Center 9.6.24, 10.2.16, 12.1.3 and later Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-21570 attacked?

It is attacked over the network.

Am I affected by CVE-2026-21570?

Check whether you run Atlassian Bamboo Data Center at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-21570: Atlassian Bamboo Data Center RCE in Apache Struts

CVE-2026-21570 · Severity: high · CVSS 8.8 · Published 2026-03-17

Atlassian Bamboo Data Center, a continuous integration and deployment platform used to automate software builds and deployments, contains a remote code execution vulnerability that allows authenticated attackers to execute arbitrary code on the server. Exploitation requires valid credentials but no additional user interaction, potentially giving attackers full control of the deployment pipeline and access to sensitive build artifacts and deployment credentials.

Vendors: Atlassian.

Quick answers

Is CVE-2026-21570 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-21570 being exploited in the wild.
How severe is CVE-2026-21570?: High severity, with a CVSS score of 8.8, published 17 March 2026.
Which products and versions are affected?: Atlassian Bamboo Data Center 9.6.0 to 9.6.23, 10.0.0 to 10.0.3, 10.1.0 to 10.1.1, 10.2.0 to 10.2.15, 11.0.0 to 11.0.8, 11.1.0, 12.0.0 to 12.0.2, 12.1.0 to 12.1.2.
Is there a fix for CVE-2026-21570?: A patch was published on 2026-03-17: Bamboo Data Center 9.6.24, 10.2.16, 12.1.3 and later Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-21570 attacked?: It is attacked over the network.
Am I affected by CVE-2026-21570?: Check whether you run Atlassian Bamboo Data Center at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This remote code execution vulnerability in Bamboo Data Center was introduced across multiple major versions (9.6.0 through 12.1.0) and requires authentication to exploit. The vulnerability allows an authenticated attacker to execute malicious code on the remote system with high severity impact. While the exact root cause is not detailed in the advisory, the related CVE-2025-68493 indicates a missing XML validation vulnerability in an Apache Struts dependency, suggesting the RCE may stem from unsafe deserialization or expression language injection within the Struts framework. The attack vector is network-based with high privilege requirements (authenticated user). Patches are available: Bamboo Data Center 9.6.x users should upgrade to 9.6.24 or later, 10.2.x users to 10.2.16 or later, and 12.1.x users to 12.1.3 or later.

Affected products

Atlassian Bamboo Data Center 9.6.0 to 9.6.23, 10.0.0 to 10.0.3, 10.1.0 to 10.1.1, 10.2.0 to 10.2.15, 11.0.0 to 11.0.8, 11.1.0, 12.0.0 to 12.0.2, 12.1.0 to 12.1.2

Timeline

2026-03-17: disclosed
2026-03-17: patched: Bamboo Data Center 9.6.24, 10.2.16, 12.1.3 and later

References

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