CVE-2026-21571

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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 inyecci\u00f3n de comandos del sistema operativo de gravedad Cr\u00edtica 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 (ejecuci\u00f3n remota de c\u00f3digo), con una puntuaci\u00f3n 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 interacci\u00f3n del usuario.\n\nAtlassian recomienda que los clientes de Bamboo Data Center actualicen a la \u00faltima versi\u00f3n; 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 versi\u00f3n mayor o igual a 9.6.25\n Bamboo Data Center 10.2: Actualizar a una versi\u00f3n mayor o igual a 10.2.18\n Bamboo Data Center 12.1: Actualizar a una versi\u00f3n mayor o igual a 12.1.6\n\nConsulte las notas de la versi\u00f3n ([https://confluence.atlassian.com/bambooreleases/bamboo-release-notes-1189793869.html]). Puede descargar la \u00faltima versi\u00f3n de Bamboo Data Center desde el centro de descargas ([https://www.atlassian.com/software/bamboo/download-archives])."}], "id": "CVE-2026-21571", "lastModified": "2026-10-26T22:10:00.163", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.4, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security@atlassian.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-21571", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-22T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-04-21T17:16:22.950", "references": [{"source": "security@atlassian.com", "tags": ["Vendor Advisory"], "url": "https://confluence.atlassian.com/pages/viewpage.action?pageId=1770913890"}, {"source": "security@atlassian.com", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://jira.atlassian.com/browse/BAM-26364"}], "sourceIdentifier": "security@atlassian.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["data_center"], "status": "affected", "versions": {"scheme": "semver", "value": "[12.1.0,12.1.3]"}}, {"platform": ["data_center"], "status": "affected", "versions": {"scheme": "semver", "value": "[12.0.0,12.0.2]"}}, {"platform": ["data_center"], "status": "affected", "versions": {"scheme": "semver", "value": "[11.0.0,11.0.8]"}}, {"platform": ["data_center"], "status": "affected", "versions": {"scheme": "semver", "value": "[10.2.0,10.2.16]"}}, {"platform": ["data_center"], "status": "affected", "versions": {"scheme": "semver", "value": "[10.1.0,10.1.1]"}}, {"platform": ["data_center"], "status": "affected", "versions": {"scheme": "semver", "value": "[10.0.0,10.0.3]"}}, {"platform": ["data_center"], "status": "affected", "versions": {"scheme": "semver", "value": "[9.6.2,9.6.24]"}}, {"platform": ["data_center"], "status": "unaffected", "versions": {"scheme": "semver", "value": "12.1.6"}}, {"platform": ["data_center"], "status": "unaffected", "versions": {"scheme": "semver", "value": "10.2.18"}}, {"platform": ["data_center"], "status": "unaffected", "versions": {"scheme": "semver", "value": "9.6.25"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Bamboo Data Center", "source": "cna", "vendor": "Atlassian"}, "product": "bamboo", "vendor": "atlassian"}], "analysis": {"en": {"generated_at": "2026-04-22T19:40:41.202403+00:00", "value": {"mitigation_remediation": ["Identify whether your Bamboo Data Center instance is running one of the vulnerable versions listed above.", "Upgrade the instance to a supported fixed release (9.6.25 or newer, 10.2.18 or newer, or 12.1.6 or newer).", "Apply network segmentation or firewall rules to limit external access to the Bamboo servers until the upgrade is complete."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The issue affects Atlassian Bamboo Data Center running any of the following versions released before the indicated fixes: 9.6.0 through 9.6.24, the earlier 10.x releases up to 10.2.17, and the earlier 12.x releases up to 12.1.5. Atlassian recommends upgrading to Bamboo Data Center 9.6.25 or later, 10.2.18 or later, or 12.1.6 or later to eliminate the vulnerability.", "description_and_impact": "This vulnerability is an OS Command Injection flaw that allows an authenticated attacker to execute arbitrary commands on a Bamboo Data Center server. The flaw provides complete compromise of confidentiality, integrity, and availability, and requires no user interaction. According to the CVSS vector, the attack can be performed over a network with low attack complexity and low required privileges.", "risk_and_exploitability": "With a CVSS score of 9.4 and an EPSS score of 1%, the risk remains high. The flaw is listed as not part of the CISA KEV catalogue. Because the vulnerability can be exploited by anyone who can authenticate to the Bamboo service, a compromised or malicious user can gain full control over the underlying host. The low but non\u2011zero EPSS score indicates a small but present likelihood of attack, while the lack of user interaction and the low attack complexity mean that a determined attacker can quickly achieve full system compromise."}}}}, "created": "2026-04-21T18:30:27.390020+00:00", "updated": "2026-04-22T19:45:25.282925+00:00", "vendors": ["atlassian", "atlassian$PRODUCT$bamboo"]}