[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fFNEE56YnhvAsTZ5AcYLD8HjAlqRS9xYGExaHbS8dJzk":3,"g5a-risk:CVE-2020-26247":169},{"success":4,"data":5,"meta":167},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":48,"epssPercentile":26,"epssTimeSeries":49,"severity":50,"affectedProducts":51,"affectedProductsCount":45,"references":67,"referencesCount":46,"weaknesses":104,"weaknessesCount":113,"isActivelyExploited":114,"cisaInfo":26,"otxData":26,"relatedBlogPosts":115,"seoMetadata":116,"configurations":141,"relatedVendorCves":165,"notableEvents":166},"CVE-2020-26247","What is CVE-2020-26247?","Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri before version 1.11.0.rc4 there is an XXE vulnerability. XML Schemas parsed by Nokogiri::XML::Schema are trusted by default, allowing external resources to be accessed over the network, potentially enabling XXE or SSRF attacks. This behavior is counter to the security policy followed by Nokogiri maintainers, which is to treat all input as untrusted by default whenever possible. This is fixed in Nokogiri version 1.11.0.rc4.","Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri before version 1.11.0.rc4 there is an XXE...","2020-12-30T19:15:12.92","2022-10-19T18:53:09.49",4.3,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:L\u002FUI:N\u002FS:U\u002FC:L\u002FI:N\u002FA:N",{"CVSSMetricV31":15,"CVSSMetricV30":26,"CVSSMetricV2":38,"CVSSMetricV40":26},[16,29],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":27,"ImpactScore":28},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":22,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":22,"IntegrityImpact":23,"AvailabilityImpact":23,"BaseScore":12,"BaseSeverity":25,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":23,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},"3.1","NETWORK","LOW","NONE","UNCHANGED","MEDIUM",null,2.8,1.4,{"Source":30,"Type":31,"CVSSData":32,"ExploitabilityScore":37,"ImpactScore":28},"security-advisories@github.com","Secondary",{"Version":20,"VectorString":33,"AttackVector":21,"AttackComplexity":34,"PrivilegesRequired":22,"UserInteraction":35,"Scope":24,"ConfidentialityImpact":22,"IntegrityImpact":23,"AvailabilityImpact":23,"BaseScore":36,"BaseSeverity":22,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":23,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},"CVSS:3.1\u002FAV:N\u002FAC:H\u002FPR:L\u002FUI:R\u002FS:U\u002FC:L\u002FI:N\u002FA:N","HIGH","REQUIRED",2.6,1.2,[39],{"Source":17,"Type":18,"CVSSData":40,"BaseSeverity":25,"ExploitabilityScore":46,"ImpactScore":47,"ACInsufInfo":26,"ObtainAllPrivilege":26,"ObtainUserPrivilege":26,"ObtainOtherPrivilege":26,"UserInteractionRequired":26},{"Version":41,"VectorString":42,"AccessVector":21,"AccessComplexity":22,"Authentication":43,"ConfidentialityImpact":44,"IntegrityImpact":23,"AvailabilityImpact":23,"BaseScore":45,"BaseSeverity":26,"Exploitability":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"CollateralDamagePotential":26,"TargetDistribution":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":26,"EnvironmentalScore":26},"2.0","AV:N\u002FAC:L\u002FAu:S\u002FC:P\u002FI:N\u002FA:N","SINGLE","PARTIAL",4,8,2.9,0.01181,[48,48,48,48,48,48,48],"Medium",[52,56,59,64],{"vendor":53,"product":53,"version":54,"criteria":55,"vulnerable":4},"nokogiri","*","cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:*",{"vendor":53,"product":53,"version":57,"criteria":58,"vulnerable":4},"1.11.0","cpe:2.3:a:nokogiri:nokogiri:1.11.0:rc1:*:*:*:ruby:*:*",{"vendor":60,"product":61,"version":62,"criteria":63,"vulnerable":4},"debian","debian_linux","9.0","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",{"vendor":60,"product":61,"version":65,"criteria":66,"vulnerable":4},"10.0","cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",[68,74,78,82,87,92,95,100],{"url":69,"source":70,"tags":71},"https:\u002F\u002Fgithub.com\u002Fsparklemotion\u002Fnokogiri\u002Fcommit\u002F9c87439d9afa14a365ff13e73adc809cb2c3d97b","GitHub",[72,73],"Patch","Third Party Advisory",{"url":75,"source":70,"tags":76},"https:\u002F\u002Fgithub.com\u002Fsparklemotion\u002Fnokogiri\u002Freleases\u002Ftag\u002Fv1.11.0.rc4",[77,73],"Release Notes",{"url":79,"source":70,"tags":80},"https:\u002F\u002Fgithub.com\u002Fsparklemotion\u002Fnokogiri\u002Fsecurity\u002Fadvisories\u002FGHSA-vr8q-g5c7-m54m",[81,73],"Mitigation",{"url":83,"source":84,"tags":85},"https:\u002F\u002Fhackerone.com\u002Freports\u002F747489","Hackerone",[86],"Permissions Required",{"url":88,"source":89,"tags":90},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2021\u002F06\u002Fmsg00007.html","Debian",[91,73],"Mailing List",{"url":93,"source":89,"tags":94},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2022\u002F10\u002Fmsg00018.html",[91,73],{"url":96,"source":97,"tags":98},"https:\u002F\u002Frubygems.org\u002Fgems\u002Fnokogiri","Rubygems",[99,73],"Product",{"url":101,"source":102,"tags":103},"https:\u002F\u002Fsecurity.gentoo.org\u002Fglsa\u002F202208-29","Gentoo",[73],[105],{"id":106,"name":107,"description":108,"extendedDescription":109,"status":110,"abstraction":111,"structure":112},"CWE-611","Improper Restriction of XML External Entity Reference","The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.","XML documents optionally contain a Document Type Definition (DTD), which, among other features, enables the definition of XML entities. It is possible to define an entity by providing a substitution string in the form of a URI. The XML parser can access the contents of this URI and embed these contents back into the XML document for further processing.\nBy submitting an XML file that defines an external entity with a file:\u002F\u002F URI, an attacker can cause the processing application to read the contents of a local file. For example, a URI such as \"file:\u002F\u002F\u002Fc:\u002Fwinnt\u002Fwin.ini\" designates (in Windows) the file C:\\Winnt\\win.ini, or file:\u002F\u002F\u002Fetc\u002Fpasswd designates the password file in Unix-based systems. Using URIs with other schemes such as http:\u002F\u002F, the attacker can force the application to make outgoing requests to servers that the attacker cannot reach directly, which can be used to bypass firewall restrictions or hide the source of attacks such as port scanning.\nOnce the content of the URI is read, it is fed back into the application that is processing the XML. This application may echo back the data (e.g. in an error message), thereby exposing the file contents.","Draft","Base","Simple",1,false,[],{"title":117,"metaDescription":118,"keywords":119,"canonicalUrl":120,"structuredData":121},"What is CVE-2020-26247? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2020-26247, a medium severity cyber security vulnerability from 2020. Nokogiri is a Rubygem providing HTML, XML, SAX, and Reade...","CVE-2020-26247, CVE-2020-26247 vulnerability, CVE-2020-26247 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, nokogiri security, debian security, nokogiri vulnerability, debian_linux vulnerability","\u002Fwhat-is\u002Fcve-2020-26247",{"@context":122,"@type":123,"headline":117,"description":118,"datePublished":10,"dateModified":11,"author":124,"publisher":128,"about":132,"mainEntityOfPage":136,"articleSection":139,"keywords":140},"https:\u002F\u002Fschema.org","TechArticle",{"@type":125,"name":126,"url":127},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":125,"name":126,"url":127,"logo":129},{"@type":130,"url":131},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":133,"name":6,"description":134,"additionalType":135},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":137,"@id":138},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2020-26247","Cybersecurity","CVE-2020-26247, CVE-2020-26247 vulnerability, CVE-2020-26247 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[142,157],{"Operator":26,"Negate":26,"Nodes":143},[144],{"Operator":145,"Negate":26,"CPEMatch":146},"OR",[147,149,151,154],{"Vulnerable":4,"Criteria":55,"MatchCriteriaID":148,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":57,"VersionEndIncluding":26},"F2ECF6A9-F5A7-43D2-A508-A1107B8CEF84",{"Vulnerable":4,"Criteria":58,"MatchCriteriaID":150,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"837DC793-18F6-4FD5-B3A4-369FEDC1C4BC",{"Vulnerable":4,"Criteria":152,"MatchCriteriaID":153,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"cpe:2.3:a:nokogiri:nokogiri:1.11.0:rc2:*:*:*:ruby:*:*","57AD249D-C891-45F2-8640-EBCEBA8D661D",{"Vulnerable":4,"Criteria":155,"MatchCriteriaID":156,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"cpe:2.3:a:nokogiri:nokogiri:1.11.0:rc3:*:*:*:ruby:*:*","B562CEEB-9707-42FC-A135-39DECE7E92A7",{"Operator":26,"Negate":26,"Nodes":158},[159],{"Operator":145,"Negate":26,"CPEMatch":160},[161,163],{"Vulnerable":4,"Criteria":63,"MatchCriteriaID":162,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"DEECE5FC-CACF-4496-A3E7-164736409252",{"Vulnerable":4,"Criteria":66,"MatchCriteriaID":164,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",[],[],{"lastModified":11,"cacheTime":168,"version":41},1792257675594,{"score":170,"band":171,"action":172,"scoredAt":173},20,"Low","Monitor","2026-10-16T06:50:10.296142+00:00"]