CVE-2026-21571
Full vulnerability record from the local CVENow database.
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]).
Severity
CRITICAL
CVSS score
9.4
(v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-04-21 17:16:22.950000
Last modified
2026-10-26 22:10:00.163000
View original CVE JSON
{
"id": "CVE-2026-21571",
"sourceIdentifier": "[email protected]",
"published": "2026-04-21T17:16:22.950",
"lastModified": "2026-10-26T22:10:00.163",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "This Critical severity OS Command Injection vulnerability was introduced in versions 9.6.0, 10.0.0, 10.1.0, 10.2.0,\r\n11.0.0, 11.1.0, 12.0.0, and 12.1.0 of Bamboo Data Center.\r\n \r\nThis RCE (Remote Code Execution) vulnerability, with a CVSS Score of 9.4 and a CVSS Vector of\r\nCVSS: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\r\non the remote system, which has high impact to confidentiality, high impact to integrity, high impact to availability,\r\nand requires no user interaction.\r\n \r\nAtlassian recommends that Bamboo Data Center customers upgrade to latest version, if you are unable to do so, upgrade\r\nyour instance to one of the specified supported fixed versions:\r\n Bamboo Data Center 9.6.0: Upgrade to a release greater than or equal to 9.6.25\r\n Bamboo Data Center 10.2: Upgrade to a release greater than or equal to 10.2.18 \r\n Bamboo Data Center 12.1: Upgrade to a release greater than or equal to 12.1.6\r\n\r\nSee 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])."
},
{
"lang": "es",
"value": "Esta vulnerabilidad de inyección de comandos del sistema operativo de gravedad Crítica fue introducida en las versiones 9.6.0, 10.0.0, 10.1.0, 10.2.0, 11.0.0, 11.1.0, 12.0.0 y 12.1.0 de Bamboo Data Center.\n\nEsta vulnerabilidad RCE (ejecución remota de código), con una puntuación CVSS de 9.4 y un vector 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, permite a un atacante autenticado ejecutar comandos en el sistema remoto, lo que tiene un alto impacto en la confidencialidad, un alto impacto en la integridad, un alto impacto en la disponibilidad y no requiere interacción del usuario.\n\nAtlassian recomienda que los clientes de Bamboo Data Center actualicen a la última versión; si no pueden hacerlo, actualicen su instancia a una de las versiones fijas compatibles especificadas:\n Bamboo Data Center 9.6.0: Actualizar a una versión mayor o igual a 9.6.25\n Bamboo Data Center 10.2: Actualizar a una versión mayor o igual a 10.2.18\n Bamboo Data Center 12.1: Actualizar a una versión mayor o igual a 12.1.6\n\nConsulte las notas de la versión ([https://confluence.atlassian.com/bambooreleases/bamboo-release-notes-1189793869.html]). Puede descargar la última versión de Bamboo Data Center desde el centro de descargas ([https://www.atlassian.com/software/bamboo/download-archives])."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Atlassian",
"product": "Bamboo Data Center",
"versions": [
{
"version": "12.1.0 to 12.1.3",
"status": "affected"
},
{
"version": "12.0.0 to 12.0.2",
"status": "affected"
},
{
"version": "11.0.0 to 11.0.8",
"status": "affected"
},
{
"version": "10.2.0 to 10.2.16",
"status": "affected"
},
{
"version": "10.1.0 to 10.1.1",
"status": "affected"
},
{
"version": "10.0.0 to 10.0.3",
"status": "affected"
},
{
"version": "9.6.2 to 9.6.24",
"status": "affected"
},
{
"version": "12.1.6",
"status": "unaffected"
},
{
"version": "10.2.18",
"status": "unaffected"
},
{
"version": "9.6.25",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV40": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "4.0",
"vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"baseScore": 9.4,
"baseSeverity": "CRITICAL",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"subAvailabilityImpact": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"confidentialityRequirement": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"availabilityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED"
}
}
],
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-04-22T00:00:00+00:00",
"id": "CVE-2026-21571",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-78"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:atlassian:bamboo:*:*:*:*:*:*:*:*",
"versionStartIncluding": "9.6.2",
"versionEndExcluding": "9.6.25",
"matchCriteriaId": "7680AD9B-BBDD-47A6-84D2-6439E03E9542"
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],
"references": [
{
"url": "https://confluence.atlassian.com/pages/viewpage.action?pageId=1770913890",
"source": "[email protected]",
"tags": [
"Vendor Advisory"
]
},
{
"url": "https://jira.atlassian.com/browse/BAM-26364",
"source": "[email protected]",
"tags": [
"Issue Tracking",
"Vendor Advisory"
]
}
]
}