Vulnerability details

CVE-2026-21571

Atlassian Bamboo Data Center
CVSS 4.0
9.4Critical

Official description

This Critical severity OS Command Injection 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 9.4 and a CVSS Vector of CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H allows an authenticated attacker to execute commands on the remote system, which has high impact to confidentiality, high impact to integrity, high impact to availability, and requires no user interaction.   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 9.6.0: Upgrade to a release greater than or equal to 9.6.25 Bamboo Data Center 10.2: Upgrade to a release greater than or equal to 10.2.18  Bamboo Data Center 12.1: Upgrade to a release greater than or equal to 12.1.6 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]).

CVSS scores

ScoreVersionSourceVector
9.4Critical 4.0 CVEProject cvelistV5 (CNA) (atlassian) CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Affected products

VendorProductVersionsSource
Atlassian Bamboo Data Center 10.0.0 to 10.0.3 CVEProject cvelistV5 (CNA)
Atlassian Bamboo Data Center 10.1.0 to 10.1.1 CVEProject cvelistV5 (CNA)
Atlassian Bamboo Data Center 10.2.0 to 10.2.16 CVEProject cvelistV5 (CNA)
Atlassian Bamboo Data Center 11.0.0 to 11.0.8 CVEProject cvelistV5 (CNA)
Atlassian Bamboo Data Center 12.0.0 to 12.0.2 CVEProject cvelistV5 (CNA)
Atlassian Bamboo Data Center 12.1.0 to 12.1.3 CVEProject cvelistV5 (CNA)
Atlassian Bamboo Data Center 9.6.2 to 9.6.24 CVEProject cvelistV5 (CNA)

References and advisories

2
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Details

Published
2026-04-21
Last updated
2026-04-23
State
Published
Assigner (CNA)
atlassian

Exploit prediction (EPSS)

1.34%
Probability of exploitation in 30 days
71.5%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
None
Technical impact
Total

Weaknesses (CWE)

  • CWE-78
    Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')