[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fQrGZnflkkwTgQtUdYgL7wQE9vlzl4FZBsbq7YF20q28":3,"g5a-risk:CVE-2021-28363":160},{"success":4,"data":5,"meta":158},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":38,"epssPercentile":26,"epssTimeSeries":39,"severity":41,"affectedProducts":42,"affectedProductsCount":58,"references":59,"referencesCount":96,"weaknesses":97,"weaknessesCount":106,"isActivelyExploited":107,"cisaInfo":26,"otxData":26,"relatedBlogPosts":108,"seoMetadata":109,"configurations":134,"relatedVendorCves":156,"notableEvents":157},"CVE-2021-28363","What is CVE-2021-28363?","The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn't given via proxy_config) doesn't verify the hostname of the certificate. This means certificates for different servers that still validate properly with the default urllib3 SSLContext will be silently accepted.","The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection t...","2021-03-15T18:15:19.017","2024-06-21T19:15:17.763",6.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:L\u002FI:L\u002FA:N",{"CVSSMetricV31":15,"CVSSMetricV30":26,"CVSSMetricV2":29,"CVSSMetricV40":26},[16],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":27,"ImpactScore":28},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":22,"IntegrityImpact":22,"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,3.9,2.5,[30],{"Source":17,"Type":18,"CVSSData":31,"BaseSeverity":25,"ExploitabilityScore":36,"ImpactScore":37,"ACInsufInfo":26,"ObtainAllPrivilege":26,"ObtainUserPrivilege":26,"ObtainOtherPrivilege":26,"UserInteractionRequired":26},{"Version":32,"VectorString":33,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":34,"IntegrityImpact":34,"AvailabilityImpact":23,"BaseScore":35,"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:N\u002FC:P\u002FI:P\u002FA:N","PARTIAL",6.4,10,4.9,0.02166,[40,40,40,40,40,38,38],0.02109,"Medium",[43,48,53],{"vendor":44,"product":45,"version":46,"criteria":47,"vulnerable":4},"python","urllib3","*","cpe:2.3:a:python:urllib3:*:*:*:*:*:*:*:*",{"vendor":49,"product":50,"version":51,"criteria":52,"vulnerable":4},"fedoraproject","fedora","34","cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",{"vendor":54,"product":55,"version":56,"criteria":57,"vulnerable":4},"oracle","peoplesoft_enterprise_peopletools","8.59","cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:*",3,[60,66,69,73,77,81,85,88,92],{"url":61,"source":62,"tags":63},"https:\u002F\u002Fgithub.com\u002Furllib3\u002Furllib3\u002Fcommit\u002F8d65ea1ecf6e2cdc27d42124e587c1b83a3118b0","GitHub",[64,65],"Patch","Third Party Advisory",{"url":67,"source":62,"tags":68},"https:\u002F\u002Fgithub.com\u002Furllib3\u002Furllib3\u002Fcommits\u002Fmain",[64,65],{"url":70,"source":62,"tags":71},"https:\u002F\u002Fgithub.com\u002Furllib3\u002Furllib3\u002Fsecurity\u002Fadvisories\u002FGHSA-5phf-pp7p-vc2r",[72,65],"Mitigation",{"url":74,"source":75,"tags":76},"https:\u002F\u002Flists.fedoraproject.org\u002Farchives\u002Flist\u002Fpackage-announce%40lists.fedoraproject.org\u002Fmessage\u002F4S65ZQVZ2ODGB52IC7VJDBUK4M5INCXL\u002F","Fedoraproject",[],{"url":78,"source":79,"tags":80},"https:\u002F\u002Fpypi.org\u002Fproject\u002Furllib3\u002F1.26.4\u002F","Pypi",[65],{"url":82,"source":83,"tags":84},"https:\u002F\u002Fsecurity.gentoo.org\u002Fglsa\u002F202107-36","Gentoo",[65],{"url":86,"source":83,"tags":87},"https:\u002F\u002Fsecurity.gentoo.org\u002Fglsa\u002F202305-02",[],{"url":89,"source":90,"tags":91},"https:\u002F\u002Fsecurity.netapp.com\u002Fadvisory\u002Fntap-20240621-0007\u002F","Netapp",[],{"url":93,"source":94,"tags":95},"https:\u002F\u002Fwww.oracle.com\u002Fsecurity-alerts\u002Fcpuoct2021.html","Oracle",[64,65],9,[98],{"id":99,"name":100,"description":101,"extendedDescription":102,"status":103,"abstraction":104,"structure":105},"CWE-295","Improper Certificate Validation","The product does not validate, or incorrectly validates, a certificate.","When a certificate is invalid or malicious, it might allow an attacker to spoof a trusted entity by interfering in the communication path between the host and client. The product might connect to a malicious host while believing it is a trusted host, or the product might be deceived into accepting spoofed data that appears to originate from a trusted host.","Draft","Base","Simple",1,false,[],{"title":110,"metaDescription":111,"keywords":112,"canonicalUrl":113,"structuredData":114},"What is CVE-2021-28363? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-28363, a medium severity cyber security vulnerability from 2021. The urllib3 library 1.26.x before 1.26.4 for Python omits...","CVE-2021-28363, CVE-2021-28363 vulnerability, CVE-2021-28363 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2021, CVSS score, exploit, patch, remediation, python security, fedoraproject security, oracle security, urllib3 vulnerability, fedora vulnerability, peoplesoft_enterprise_peopletools vulnerability","\u002Fwhat-is\u002Fcve-2021-28363",{"@context":115,"@type":116,"headline":110,"description":111,"datePublished":10,"dateModified":11,"author":117,"publisher":121,"about":125,"mainEntityOfPage":129,"articleSection":132,"keywords":133},"https:\u002F\u002Fschema.org","TechArticle",{"@type":118,"name":119,"url":120},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":118,"name":119,"url":120,"logo":122},{"@type":123,"url":124},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":126,"name":6,"description":127,"additionalType":128},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":130,"@id":131},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-28363","Cybersecurity","CVE-2021-28363, CVE-2021-28363 vulnerability, CVE-2021-28363 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[135,144,150],{"Operator":26,"Negate":26,"Nodes":136},[137],{"Operator":138,"Negate":26,"CPEMatch":139},"OR",[140],{"Vulnerable":4,"Criteria":47,"MatchCriteriaID":141,"VersionStartExcluding":26,"VersionStartIncluding":142,"VersionEndExcluding":143,"VersionEndIncluding":26},"E96214AF-6F58-4B98-9C24-CF7917C431DB","1.26.0","1.26.4",{"Operator":26,"Negate":26,"Nodes":145},[146],{"Operator":138,"Negate":26,"CPEMatch":147},[148],{"Vulnerable":4,"Criteria":52,"MatchCriteriaID":149,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"A930E247-0B43-43CB-98FF-6CE7B8189835",{"Operator":26,"Negate":26,"Nodes":151},[152],{"Operator":138,"Negate":26,"CPEMatch":153},[154],{"Vulnerable":4,"Criteria":57,"MatchCriteriaID":155,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"C8AF00C6-B97F-414D-A8DF-057E6BFD8597",[],[],{"lastModified":11,"cacheTime":159,"version":32},1792264681536,{"score":161,"band":162,"action":163,"scoredAt":164},32,"Low","Monitor","2026-10-16T06:50:38.92873+00:00"]