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TI-2026-17400 Aliases CVE-2026-21571GHSA-6jpg-3x8j-cwmr

OS command injection in Atlassian Bamboo Data Center

Priority MEDIUM 45CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

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]).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01345 71st percentileScored 2026-11-07
Fix Fixed Bamboo Data Center (Atlassian): 12.1.6, 10.2.18, 9.6.25

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AtlassianBamboo Data Center12.1.0 to 12.1.3; 12.0.0 to 12.0.2; 11.0.0 to 11.0.8; 10.2.0 to 10.2.16; 10.1.0 to 10.1.1; 10.0.0 to 10.0.3; 9.6.2 to 9.6.2412.1.6, 10.2.18, 9.6.25Patch availableCNA
  • Bamboo Data Center VendorAtlassian Affected 12.1.0 to 12.1.3; 12.0.0 to 12.0.2; 11.0.0 to 11.0.8; 10.2.0 to 10.2.16; 10.1.0 to 10.1.1; 10.0.0 to 10.0.3; 9.6.2 to 9.6.24 Fixed in 12.1.6, 10.2.18, 9.6.25 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:atlassian:bamboo:*:*:*:*:*:*:*:*9.6.2 to before 9.6.25; 10.0.0 to before 10.2.18; 11.0.0 to before 12.1.6VulnerableAtlassian
  • cpe:2.3:a:atlassian:bamboo:*:*:*:*:*:*:*:* Versions 9.6.2 to before 9.6.25; 10.0.0 to before 10.2.18; 11.0.0 to before 12.1.6 Vulnerable ·Atlassian

Remediation

  • Fix · CNA Bamboo Data Center (Atlassian) Fixed in 12.1.6, 10.2.18, 9.6.25

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21571
  2. 2026-10-03 Alias added: GHSA-6jpg-3x8j-cwmr

References

Advisory 2

  • TI-2026-67904 Arbitrary file access in Atlassian Data Center products KEVCVSS 4.0CRITICAL 9.3
  • TI-2012-02540 Atlassian JIRA before 5.0.1; Confluence before 3.5.16, 4.0 before 4.0.7, and 4.1 before… CVSS 3.1CRITICAL 9.1
  • TI-2022-09598 Improper authentication in Atlassian Bamboo Server CVSS 3.1CRITICAL 9.8
  • TI-2016-04529 Atlassian Bamboo before 5.11.4.1 and 5.12.x before 5.12.3.1 does not properly restrict… CVSS 3.0CRITICAL 9.8
  • TI-2015-06881 An unspecified resource in Atlassian Bamboo before 5.9.9 and 5.10.x before 5.10.0 allows… CVSS 3.0CRITICAL 9.8
  • TI-2014-07936 The Ignite Realtime Smack XMPP API, as used in Atlassian Bamboo before 5.9.9 and 5.10.x… CVSS 3.0CRITICAL 9.8
See all 27 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences