[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fJ77exHRPb03ci9Ujhuw1hUX8yzXfUJs9IWsIiN3k24Q":3,"g5a-risk:CVE-2020-4027":116},{"success":4,"data":5,"meta":114},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":40,"epssPercentile":27,"epssTimeSeries":41,"severity":42,"affectedProducts":43,"affectedProductsCount":52,"references":53,"referencesCount":62,"weaknesses":63,"weaknessesCount":62,"isActivelyExploited":72,"cisaInfo":27,"otxData":27,"relatedBlogPosts":73,"seoMetadata":74,"configurations":99,"relatedVendorCves":112,"notableEvents":113},"CVE-2020-4027","What is CVE-2020-4027?","Affected versions of Atlassian Confluence Server and Data Center allowed remote attackers with system administration permissions to bypass velocity template injection mitigations via an injection vulnerability in custom user macros. The affected versions are before version 7.4.5, and from version 7.5.0 before 7.5.1.","Affected versions of Atlassian Confluence Server and Data Center allowed remote attackers with system administration permissions to bypass velocity template ...","2020-07-01T02:15:12.35","2021-12-13T16:05:55.44",4.7,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:H\u002FUI:N\u002FS:U\u002FC:L\u002FI:L\u002FA:L",{"CVSSMetricV31":15,"CVSSMetricV30":27,"CVSSMetricV2":30,"CVSSMetricV40":27},[16],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":28,"ImpactScore":29},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":24,"Scope":25,"ConfidentialityImpact":22,"IntegrityImpact":22,"AvailabilityImpact":22,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":22,"ModifiedAttackVector":27,"ModifiedAttackComplexity":27,"ModifiedPrivilegesRequired":27,"ModifiedUserInteraction":27,"ModifiedScope":27,"ModifiedConfidentialityImpact":27,"ModifiedIntegrityImpact":27,"ModifiedAvailabilityImpact":27,"EnvironmentalScore":27,"EnvironmentalSeverity":27},"3.1","NETWORK","LOW","HIGH","NONE","UNCHANGED","MEDIUM",null,1.2,3.4,[31],{"Source":17,"Type":18,"CVSSData":32,"BaseSeverity":26,"ExploitabilityScore":38,"ImpactScore":39,"ACInsufInfo":27,"ObtainAllPrivilege":27,"ObtainUserPrivilege":27,"ObtainOtherPrivilege":27,"UserInteractionRequired":27},{"Version":33,"VectorString":34,"AccessVector":21,"AccessComplexity":22,"Authentication":35,"ConfidentialityImpact":36,"IntegrityImpact":36,"AvailabilityImpact":36,"BaseScore":37,"BaseSeverity":27,"Exploitability":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"CollateralDamagePotential":27,"TargetDistribution":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":27,"EnvironmentalScore":27},"2.0","AV:N\u002FAC:L\u002FAu:S\u002FC:P\u002FI:P\u002FA:P","SINGLE","PARTIAL",6.5,8,6.4,0.01515,[40,40,40,40,40,40,40],"Medium",[44,49],{"vendor":45,"product":46,"version":47,"criteria":48,"vulnerable":4},"atlassian","confluence","*","cpe:2.3:a:atlassian:confluence:*:*:*:*:*:*:*:*",{"vendor":45,"product":50,"version":47,"criteria":51,"vulnerable":4},"confluence_server","cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*",2,[54],{"url":55,"source":56,"tags":57},"https:\u002F\u002Fjira.atlassian.com\u002Fbrowse\u002FCONFSERVER-59898","Atlassian",[58,59,60,61],"Issue Tracking","Patch","Release Notes","Vendor Advisory",1,[64],{"id":65,"name":66,"description":67,"extendedDescription":68,"status":69,"abstraction":70,"structure":71},"CWE-74","Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')","The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.","Software or other automated logic has certain assumptions about what constitutes data and control respectively. It is the lack of verification of these assumptions for user-controlled input that leads to injection problems. Injection problems encompass a wide variety of issues -- all mitigated in very different ways and usually attempted in order to alter the control flow of the process. For this reason, the most effective way to discuss these weaknesses is to note the distinct features that classify them as injection weaknesses. The most important issue to note is that all injection problems share one thing in common -- i.e., they allow for the injection of control plane data into the user-controlled data plane. This means that the execution of the process may be altered by sending code in through legitimate data channels, using no other mechanism. While buffer overflows, and many other flaws, involve the use of some further issue to gain execution, injection problems need only for the data to be parsed.","Incomplete","Class","Simple",false,[],{"title":75,"metaDescription":76,"keywords":77,"canonicalUrl":78,"structuredData":79},"What is CVE-2020-4027? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2020-4027, a medium severity cyber security vulnerability from 2020. Affected versions of Atlassian Confluence Server and Data ...","CVE-2020-4027, CVE-2020-4027 vulnerability, CVE-2020-4027 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2020, CVSS score, exploit, patch, remediation, atlassian security, confluence vulnerability, confluence_server vulnerability","\u002Fwhat-is\u002Fcve-2020-4027",{"@context":80,"@type":81,"headline":75,"description":76,"datePublished":10,"dateModified":11,"author":82,"publisher":86,"about":90,"mainEntityOfPage":94,"articleSection":97,"keywords":98},"https:\u002F\u002Fschema.org","TechArticle",{"@type":83,"name":84,"url":85},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":83,"name":84,"url":85,"logo":87},{"@type":88,"url":89},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":91,"name":6,"description":92,"additionalType":93},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":95,"@id":96},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2020-4027","Cybersecurity","CVE-2020-4027, CVE-2020-4027 vulnerability, CVE-2020-4027 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[100],{"Operator":27,"Negate":27,"Nodes":101},[102],{"Operator":103,"Negate":27,"CPEMatch":104},"OR",[105,108],{"Vulnerable":4,"Criteria":48,"MatchCriteriaID":106,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":107,"VersionEndIncluding":27},"5BA01DD0-D61B-4307-8829-06BECB697AE8","7.4.5",{"Vulnerable":4,"Criteria":51,"MatchCriteriaID":109,"VersionStartExcluding":27,"VersionStartIncluding":110,"VersionEndExcluding":111,"VersionEndIncluding":27},"32D81366-EB40-4F36-B19B-18DEC20953F1","7.5.0","7.5.1",[],[],{"lastModified":11,"cacheTime":115,"version":33},1792453390313,{"score":117,"band":118,"action":119,"scoredAt":120},18,"Info","Track","2026-10-16T06:48:55.608353+00:00"]