{"api_version":"1","generated_at":"2026-10-06T02:02:59+00:00","cve":"CVE-2026-21589","urls":{"html":"https://cve.report/CVE-2026-21589","api":"https://cve.report/api/cve/CVE-2026-21589.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-21589","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-21589"},"summary":{"title":"CVE-2026-21589","description":"h3. Summary\n\nThis is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific files within the web application root directory in affected versions. Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. In some configurations, there may be some sensitive files that make this highly severe.  \n\nh3. Context\n\nThis vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions.\n\nh3. Details:\n\n* The vulnerability must be addressed for affected versions of:\n Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1\n Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19\n Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.1, 7.2.4\n Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12\n Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12\n Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12\n Crucible, fix versions 4.9.15\n Fisheye, fix version 4.9.15\n* Exploitation requires prior knowledge of the target file's exact name and path.\n* The vulnerability does not include the capability to enumerate or list directory contents.","state":"PUBLISHED","assigner":"atlassian","published_at":"2026-10-05 22:16:58","updated_at":"2026-10-05 22:16:58"},"problem_types":["Path Traversal (Arbitrary 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21589","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Atlassian","product":"Bamboo Data Center","version":"affected All other versions","platforms":[]},{"source":"CNA","vendor":"Atlassian","product":"Bamboo Data Center","version":"unaffected Patch version 10.2.4 and later","platforms":[]},{"source":"CNA","vendor":"Atlassian","product":"Bamboo Data Center","version":"unaffected Patch version 12.1.12 and later","platforms":[]},{"source":"CNA","vendor":"Atlassian","product":"Bamboo Server","version":"affected All versions","platforms":[]},{"source":"CNA","vendor":"Atlassian","product":"Bitbucket Data Center","version":"affected All other versions","platforms":[]},{"source":"CNA","vendor":"Atlassian","product":"Bitbucket Data Center","version":"unaffected Patch version 10.2.8 and 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versions"},{"status":"unaffected","version":"Patch version 10.2.4 and later"},{"status":"unaffected","version":"Patch version 12.1.12 and later"}]},{"product":"Bamboo Server","vendor":"Atlassian","versions":[{"status":"affected","version":"All versions"}]},{"product":"Bitbucket Data Center","vendor":"Atlassian","versions":[{"status":"affected","version":"All other versions"},{"status":"unaffected","version":"Patch version 10.2.8 and later"},{"status":"unaffected","version":"Patch version 10.5.1 and later"},{"status":"unaffected","version":"Patch version 9.4.26 and later"}]},{"product":"Bitbucket Server","vendor":"Atlassian","versions":[{"status":"affected","version":"All versions"}]},{"product":"Confluence Data Center","vendor":"Atlassian","versions":[{"status":"affected","version":"All other versions"},{"status":"unaffected","version":"Patch version 10.2.19 and later"},{"status":"unaffected","version":"Patch version 9.2.26 and later"}]},{"product":"Confluence 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Summary\n\nThis is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific files within the web application root directory in affected versions. Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. In some configurations, there may be some sensitive files that make this highly severe.  \n\nh3. Context\n\nThis vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions.\n\nh3. Details:\n\n* The vulnerability must be addressed for affected versions of:\n Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1\n Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19\n Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.1, 7.2.4\n Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12\n Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12\n Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12\n Crucible, fix versions 4.9.15\n Fisheye, fix version 4.9.15\n* Exploitation requires prior knowledge of the target file's exact name and path.\n* The vulnerability does not include the capability to enumerate or list directory contents."}],"metrics":[{"cvssV4_0":{"baseScore":9.3,"baseSeverity":"CRITICAL","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H","version":"4.0"}}],"problemTypes":[{"descriptions":[{"description":"Path Traversal (Arbitrary Read/Write)","lang":"en","type":"Path Traversal (Arbitrary Read/Write)"}]}],"providerMetadata":{"dateUpdated":"2026-10-05T21:30:00.390Z","orgId":"f08a6ab8-ed46-4c22-8884-d911ccfe3c66","shortName":"atlassian"},"references":[{"url":"https://jira.atlassian.com/browse/BAM-26567"},{"url":"https://jira.atlassian.com/browse/BSERV-20604"},{"url":"https://jira.atlassian.com/browse/CONFSERVER-104488"},{"url":"https://jira.atlassian.com/browse/CRUC-8741"},{"url":"https://jira.atlassian.com/browse/CWD-6610"},{"url":"https://jira.atlassian.com/browse/FE-7583"},{"url":"https://jira.atlassian.com/browse/JRASERVER-79546"},{"url":"https://jira.atlassian.com/browse/JSDSERVER-16809"}]}},"cveMetadata":{"assignerOrgId":"f08a6ab8-ed46-4c22-8884-d911ccfe3c66","assignerShortName":"atlassian","cveId":"CVE-2026-21589","datePublished":"2026-10-05T21:30:00.390Z","dateReserved":"2026-01-01T00:00:40.722Z","dateUpdated":"2026-10-05T21:30:00.390Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-05 22:16:58","lastModifiedDate":"2026-10-05 22:16:58","problem_types":["Path Traversal (Arbitrary Read/Write)"],"metrics":{"cvssMetricV40":[{"source":"security@atlassian.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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":9.3,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","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"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"21589","Ordinal":"1","Title":"CVE-2026-21589","CVE":"CVE-2026-21589","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"21589","Ordinal":"1","NoteData":"h3. Summary\n\nThis is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific files within the web application root directory in affected versions. Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. In some configurations, there may be some sensitive files that make this highly severe.  \n\nh3. Context\n\nThis vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions.\n\nh3. Details:\n\n* The vulnerability must be addressed for affected versions of:\n Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1\n Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19\n Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.1, 7.2.4\n Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12\n Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12\n Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12\n Crucible, fix versions 4.9.15\n Fisheye, fix version 4.9.15\n* Exploitation requires prior knowledge of the target file's exact name and path.\n* The vulnerability does not include the capability to enumerate or list directory contents.","Type":"Description","Title":"CVE-2026-21589"}]}}}