CVE-2026-21571

{"id": "CVE-2026-21571", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-21571", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-04-22T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "security@atlassian.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.4, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "security@atlassian.com", "affectedData": [{"vendor": "Atlassian", "product": "Bamboo Data Center", "versions": [{"status": "affected", "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": "unaffected", "version": "12.1.6"}, {"status": "unaffected", "version": "10.2.18"}, {"status": "unaffected", "version": "9.6.25"}]}]}], "published": "2026-04-21T17:16:22.950", "references": [{"url": "https://confluence.atlassian.com/pages/viewpage.action?pageId=1770913890", "tags": ["Vendor Advisory"], "source": "security@atlassian.com"}, {"url": "https://jira.atlassian.com/browse/BAM-26364", "tags": ["Issue Tracking", "Vendor Advisory"], "source": "security@atlassian.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-78"}]}], "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\u00a0\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\u00a0\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\u00a0\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 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])."}], "lastModified": "2026-10-26T22:10:00.163", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:atlassian:bamboo:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7680AD9B-BBDD-47A6-84D2-6439E03E9542", "versionEndExcluding": "9.6.25", "versionStartIncluding": "9.6.2"}, {"criteria": "cpe:2.3:a:atlassian:bamboo:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B70B1191-A7BA-4A79-8B29-EB0206E2F2C0", "versionEndExcluding": "10.2.18", "versionStartIncluding": "10.0.0"}, {"criteria": "cpe:2.3:a:atlassian:bamboo:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5748EF03-C1E4-4946-9B8D-9FB8F6BD83D0", "versionEndExcluding": "12.1.6", "versionStartIncluding": "11.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@atlassian.com"}