[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fsHjSoiyum_l1J24iPeXw1yPA-WhuOt9WK2UKqhI38YA":3,"g5a-risk:CVE-2026-21589":127},{"success":4,"data":5,"meta":124},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":30,"epssPercentile":31,"epssTimeSeries":32,"severity":35,"affectedProducts":36,"affectedProductsCount":37,"references":38,"referencesCount":68,"weaknesses":69,"weaknessesCount":78,"isActivelyExploited":4,"cisaInfo":79,"otxData":31,"relatedBlogPosts":81,"seoMetadata":82,"configurations":107,"relatedVendorCves":108,"notableEvents":109},"CVE-2026-21589","What is CVE-2026-21589?","This 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. This vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions. The vulnerability must be addressed for affected versions of: -- Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1 -- Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19 -- Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.7, 7.2.4 -- Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12 -- Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12 -- Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12 -- Crucible, fix versions 4.9.15 -- Fisheye, fix version 4.9.15 -- Exploitation requires prior knowledge of the target file's exact name and path. The vulnerability does not include the capability to enumerate or list directory contents.","This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center....","2026-10-05T22:16:58.423","2026-10-07T13:17:22.273",9.3,"CVSS:4.0\u002FAV:N\u002FAC:L\u002FAT:N\u002FPR:N\u002FUI:N\u002FVC:H\u002FVI:N\u002FVA:N\u002FSC:H\u002FSI:H\u002FSA:H\u002FE:X\u002FCR:X\u002FIR:X\u002FAR:X\u002FMAV:X\u002FMAC:X\u002FMAT:X\u002FMPR:X\u002FMUI:X\u002FMVC:X\u002FMVI:X\u002FMVA:X\u002FMSC:X\u002FMSI:X\u002FMSA:X\u002FS:X\u002FAU:X\u002FR:X\u002FV:X\u002FRE:X\u002FU:X",{"CVSSMetricV31":15,"CVSSMetricV30":16,"CVSSMetricV2":17,"CVSSMetricV40":18},[],[],[],[19],{"Source":20,"Type":21,"CVSSData":22},"security@atlassian.com","Secondary",{"Version":23,"VectorString":13,"BaseScore":12,"BaseSeverity":24,"AttackVector":25,"AttackComplexity":26,"AttackRequirements":27,"PrivilegesRequired":27,"UserInteraction":27,"VulnConfidentialityImpact":28,"VulnIntegrityImpact":27,"VulnAvailabilityImpact":27,"SubConfidentialityImpact":28,"SubIntegrityImpact":28,"SubAvailabilityImpact":28,"ExploitMaturity":29,"ConfidentialityRequirement":29,"IntegrityRequirement":29,"AvailabilityRequirement":29,"ModifiedAttackVector":29,"ModifiedAttackComplexity":29,"ModifiedAttackRequirements":29,"ModifiedPrivilegesRequired":29,"ModifiedUserInteraction":29,"ModifiedVulnConfidentialityImpact":29,"ModifiedVulnIntegrityImpact":29,"ModifiedVulnAvailabilityImpact":29,"ModifiedSubConfidentialityImpact":29,"ModifiedSubIntegrityImpact":29,"ModifiedSubAvailabilityImpact":29,"Safety":29,"Automatable":29,"Recovery":29,"ValueDensity":29,"VulnerabilityResponseEffort":29,"ProviderUrgency":29},"4.0","CRITICAL","NETWORK","LOW","NONE","HIGH","NOT_DEFINED",0.12711,null,[33,34,34,34,34,30,30],0.01773,0.02777,"Critical",[],0,[39,43,46,49,52,55,58,61,64],{"url":40,"source":41,"tags":42},"https:\u002F\u002Fjira.atlassian.com\u002Fbrowse\u002FBAM-26567","Atlassian",[],{"url":44,"source":41,"tags":45},"https:\u002F\u002Fjira.atlassian.com\u002Fbrowse\u002FBSERV-20604",[],{"url":47,"source":41,"tags":48},"https:\u002F\u002Fjira.atlassian.com\u002Fbrowse\u002FCONFSERVER-104488",[],{"url":50,"source":41,"tags":51},"https:\u002F\u002Fjira.atlassian.com\u002Fbrowse\u002FCRUC-8741",[],{"url":53,"source":41,"tags":54},"https:\u002F\u002Fjira.atlassian.com\u002Fbrowse\u002FCWD-6610",[],{"url":56,"source":41,"tags":57},"https:\u002F\u002Fjira.atlassian.com\u002Fbrowse\u002FFE-7583",[],{"url":59,"source":41,"tags":60},"https:\u002F\u002Fjira.atlassian.com\u002Fbrowse\u002FJRASERVER-79546",[],{"url":62,"source":41,"tags":63},"https:\u002F\u002Fjira.atlassian.com\u002Fbrowse\u002FJSDSERVER-16809",[],{"url":65,"source":66,"tags":67},"https:\u002F\u002Fgithub.com\u002Fwatchtowrlabs\u002FwatchTowr-vs-Atlassian-CVE-2026-21589","GitHub",[],9,[70],{"id":71,"name":72,"description":73,"extendedDescription":74,"status":75,"abstraction":76,"structure":77},"CWE-552","Files or Directories Accessible to External Parties","The product makes files or directories accessible to unauthorized actors, even though they should not be.","Web servers, FTP servers, and similar servers may store a set of files underneath a \"root\" directory that is accessible to the server's users.  Applications may store sensitive files underneath this root without also using access control to limit which users may request those files, if any.  Alternately, an application might package multiple files or directories into an archive file (e.g., ZIP or tar), but the application might not exclude sensitive files that are underneath those directories.\nIn cloud technologies and containers, this weakness might present itself in the form of misconfigured storage accounts that can be read or written by a public or anonymous user.","Draft","Base","Simple",1,{"shortDescription":80,"requiredAction":80,"vulnerabilityName":80,"dateAdded":31},"",[],{"title":83,"metaDescription":84,"keywords":85,"canonicalUrl":86,"structuredData":87},"What is CVE-2026-21589? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2026-21589, a critical severity cyber security vulnerability from 2026. This is a vulnerability in Bitbucket Data Center, Confl...","CVE-2026-21589, CVE-2026-21589 vulnerability, CVE-2026-21589 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2026, CVSS score, exploit, patch, remediation","\u002Fwhat-is\u002Fcve-2026-21589",{"@context":88,"@type":89,"headline":83,"description":84,"datePublished":10,"dateModified":11,"author":90,"publisher":94,"about":98,"mainEntityOfPage":102,"articleSection":105,"keywords":106},"https:\u002F\u002Fschema.org","TechArticle",{"@type":91,"name":92,"url":93},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":91,"name":92,"url":93,"logo":95},{"@type":96,"url":97},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":99,"name":6,"description":100,"additionalType":101},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":103,"@id":104},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2026-21589","Cybersecurity","CVE-2026-21589, CVE-2026-21589 vulnerability, CVE-2026-21589 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[],[],[110,117],{"id":111,"eventType":112,"eventTime":113,"details":114,"label":115,"color":116},"e3125896-12d3-4918-840d-93831e4ecc12","NEW_NVD","2026-10-06T04:01:46.936997+00:00","New CVE added to NVD","Published to NVD","blue",{"id":118,"eventType":119,"eventTime":120,"details":121,"label":122,"color":123},"08e9b6c7-8286-4ad2-834a-7690d9636e82","NEW_CISA","2026-10-16T04:01:10.790024+00:00","CVE added to CISA Known Exploited Vulnerabilities","Added to CISA KEV","red",{"lastModified":11,"cacheTime":125,"version":126},1792324003560,"2.0",{"score":128,"band":35,"action":129,"scoredAt":130},90,"Emergency patch","2026-10-16T07:18:28.01195+00:00"]