[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fBYfmr7xtkAt9fEMR63CbFzavZDawSsjy4FmL7cyRXoA":3,"g5a-risk:CVE-2019-5420":158},{"success":4,"data":5,"meta":156},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":39,"epssPercentile":27,"epssTimeSeries":40,"severity":41,"affectedProducts":42,"affectedProductsCount":61,"references":62,"referencesCount":88,"weaknesses":89,"weaknessesCount":104,"isActivelyExploited":105,"cisaInfo":27,"otxData":27,"relatedBlogPosts":106,"seoMetadata":107,"configurations":132,"relatedVendorCves":154,"notableEvents":155},"CVE-2019-5420","What is CVE-2019-5420?","A remote code execution vulnerability in development mode Rails \u003C5.2.2.1, \u003C6.0.0.beta3 can allow an attacker to guess the automatically generated development mode secret token. This secret token can be used in combination with other Rails internals to escalate to a remote code execution exploit.","A remote code execution vulnerability in development mode Rails \u003C5.2.2.1, \u003C6.0.0.beta3 can allow an attacker to guess the automatically generated development...","2019-03-27T14:29:01.72","2023-11-07T03:11:34.54",9.8,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:H",{"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":23,"Scope":24,"ConfidentialityImpact":25,"IntegrityImpact":25,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":25,"ModifiedAttackVector":27,"ModifiedAttackComplexity":27,"ModifiedPrivilegesRequired":27,"ModifiedUserInteraction":27,"ModifiedScope":27,"ModifiedConfidentialityImpact":27,"ModifiedIntegrityImpact":27,"ModifiedAvailabilityImpact":27,"EnvironmentalScore":27,"EnvironmentalSeverity":27},"3.1","NETWORK","LOW","NONE","UNCHANGED","HIGH","CRITICAL",null,3.9,5.9,[31],{"Source":17,"Type":18,"CVSSData":32,"BaseSeverity":25,"ExploitabilityScore":37,"ImpactScore":38,"ACInsufInfo":27,"ObtainAllPrivilege":27,"ObtainUserPrivilege":27,"ObtainOtherPrivilege":27,"UserInteractionRequired":27},{"Version":33,"VectorString":34,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":35,"IntegrityImpact":35,"AvailabilityImpact":35,"BaseScore":36,"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:N\u002FC:P\u002FI:P\u002FA:P","PARTIAL",7.5,10,6.4,0.8933,[39,39,39,39,39,39,39],"Critical",[43,48,51,56],{"vendor":44,"product":45,"version":46,"criteria":47,"vulnerable":4},"rubyonrails","rails","*","cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*",{"vendor":44,"product":45,"version":49,"criteria":50,"vulnerable":4},"6.0.0","cpe:2.3:a:rubyonrails:rails:6.0.0:beta1:*:*:*:*:*:*",{"vendor":52,"product":53,"version":54,"criteria":55,"vulnerable":4},"debian","debian_linux","8.0","cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",{"vendor":57,"product":58,"version":59,"criteria":60,"vulnerable":4},"fedoraproject","fedora","30","cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",4,[63,70,74,78,84],{"url":64,"source":65,"tags":66},"http:\u002F\u002Fpacketstormsecurity.com\u002Ffiles\u002F152704\u002FRuby-On-Rails-DoubleTap-Development-Mode-secret_key_base-Remote-Code-Execution.html","Packetstormsecurity",[67,68,69],"Exploit","Third Party Advisory","VDB Entry",{"url":71,"source":72,"tags":73},"https:\u002F\u002Fgroups.google.com\u002Fforum\u002F#%21topic\u002Frubyonrails-security\u002FIsQKvDqZdKw","Google",[],{"url":75,"source":76,"tags":77},"https:\u002F\u002Flists.fedoraproject.org\u002Farchives\u002Flist\u002Fpackage-announce%40lists.fedoraproject.org\u002Fmessage\u002FY43636TH4D6T46IC6N2RQVJTRFJAAYGA\u002F","Fedoraproject",[],{"url":79,"source":80,"tags":81},"https:\u002F\u002Fweblog.rubyonrails.org\u002F2019\u002F3\u002F13\u002FRails-4-2-5-1-5-1-6-2-have-been-released\u002F","Rubyonrails",[82,83],"Patch","Vendor Advisory",{"url":85,"source":86,"tags":87},"https:\u002F\u002Fwww.exploit-db.com\u002Fexploits\u002F46785\u002F","Exploit-db",[67,68,69],5,[90,98],{"id":91,"name":92,"description":93,"extendedDescription":94,"status":95,"abstraction":96,"structure":97},"CWE-330","Use of Insufficiently Random Values","The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.","When product generates predictable values in a context requiring unpredictability, it may be possible for an attacker to guess the next value that will be generated, and use this guess to impersonate another user or access sensitive information.","Stable","Class","Simple",{"id":99,"name":100,"description":101,"extendedDescription":102,"status":103,"abstraction":96,"structure":97},"CWE-77","Improper Neutralization of Special Elements used in a Command ('Command Injection')","The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.","Many protocols and products have their own custom command language. While OS or shell command strings are frequently discovered and targeted, developers may not realize that these other command languages might also be vulnerable to attacks.","Draft",2,false,[],{"title":108,"metaDescription":109,"keywords":110,"canonicalUrl":111,"structuredData":112},"What is CVE-2019-5420? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2019-5420, a critical severity cyber security vulnerability from 2019. High exploit probability (89.3%). A remote code executio...","CVE-2019-5420, CVE-2019-5420 vulnerability, CVE-2019-5420 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2019, CVSS score, exploit, patch, remediation, rubyonrails security, debian security, fedoraproject security, rails vulnerability, debian_linux vulnerability, fedora vulnerability, high risk vulnerability, actively exploited","\u002Fwhat-is\u002Fcve-2019-5420",{"@context":113,"@type":114,"headline":108,"description":109,"datePublished":10,"dateModified":11,"author":115,"publisher":119,"about":123,"mainEntityOfPage":127,"articleSection":130,"keywords":131},"https:\u002F\u002Fschema.org","TechArticle",{"@type":116,"name":117,"url":118},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":116,"name":117,"url":118,"logo":120},{"@type":121,"url":122},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":124,"name":6,"description":125,"additionalType":126},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":128,"@id":129},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2019-5420","Cybersecurity","CVE-2019-5420, CVE-2019-5420 vulnerability, CVE-2019-5420 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[133,146],{"Operator":27,"Negate":27,"Nodes":134},[135],{"Operator":136,"Negate":27,"CPEMatch":137},"OR",[138,141,143],{"Vulnerable":4,"Criteria":47,"MatchCriteriaID":139,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":140,"VersionEndIncluding":27},"E0F04AF9-16F6-4E06-A273-1350DA7E42D4","5.2.2.1",{"Vulnerable":4,"Criteria":50,"MatchCriteriaID":142,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"A6484A59-C742-4ADC-B57F-3D51CEC351BA",{"Vulnerable":4,"Criteria":144,"MatchCriteriaID":145,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"cpe:2.3:a:rubyonrails:rails:6.0.0:beta2:*:*:*:*:*:*","64F85321-5D75-4E0F-820D-22F393BAAEBD",{"Operator":27,"Negate":27,"Nodes":147},[148],{"Operator":136,"Negate":27,"CPEMatch":149},[150,152],{"Vulnerable":4,"Criteria":55,"MatchCriteriaID":151,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",{"Vulnerable":4,"Criteria":60,"MatchCriteriaID":153,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"97A4B8DF-58DA-4AB6-A1F9-331B36409BA3",[],[],{"lastModified":11,"cacheTime":157,"version":33},1792256431060,{"score":159,"band":160,"action":161,"scoredAt":162},79,"High","Patch now","2026-10-16T06:45:52.327266+00:00"]