[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fODqgZhcFjPPG9qczj9keTPwy-FHAPwafdwExPrY3byw":3,"g5a-risk:CVE-2021-3733":305},{"success":4,"data":5,"meta":303},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":43,"epssPercentile":27,"epssTimeSeries":44,"severity":46,"affectedProducts":47,"affectedProductsCount":129,"references":130,"referencesCount":185,"weaknesses":186,"weaknessesCount":195,"isActivelyExploited":42,"cisaInfo":27,"otxData":27,"relatedBlogPosts":196,"seoMetadata":197,"configurations":222,"relatedVendorCves":301,"notableEvents":302},"CVE-2021-3733","What is CVE-2021-3733?","There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.","There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connect...","2022-03-10T17:42:59.623","2025-11-03T22:15:50.833",6.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:L\u002FUI:N\u002FS:U\u002FC:N\u002FI:N\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":30,"CVSSMetricV2":31,"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":22,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":27,"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","MEDIUM",null,2.8,3.6,[],[32],{"Source":17,"Type":18,"CVSSData":33,"BaseSeverity":26,"ExploitabilityScore":40,"ImpactScore":41,"ACInsufInfo":42,"ObtainAllPrivilege":42,"ObtainUserPrivilege":42,"ObtainOtherPrivilege":42,"UserInteractionRequired":42},{"Version":34,"VectorString":35,"AccessVector":21,"AccessComplexity":22,"Authentication":36,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":37,"BaseScore":38,"BaseSeverity":39,"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:N\u002FI:N\u002FA:P","SINGLE","PARTIAL",4,"",8,2.9,false,0.04799,[45,45,45,45,43,43,43],0.04675,"Medium",[48,52,55,60,63,66,69,73,76,79,82,85,88,91,94,97,102,106,109,112,115,120,123,126],{"vendor":49,"product":49,"version":50,"criteria":51,"vulnerable":4},"python","*","cpe:2.3:a:python:python:*:*:*:*:*:*:*:*",{"vendor":49,"product":49,"version":53,"criteria":54,"vulnerable":4},"3.10.0","cpe:2.3:a:python:python:3.10.0:-:*:*:*:*:*:*",{"vendor":56,"product":57,"version":58,"criteria":59,"vulnerable":4},"redhat","codeready_linux_builder","8.0","cpe:2.3:a:redhat:codeready_linux_builder:8.0:*:*:*:*:*:*:*",{"vendor":56,"product":61,"version":58,"criteria":62,"vulnerable":4},"codeready_linux_builder_for_ibm_z_systems","cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:8.0:*:*:*:*:*:*:*",{"vendor":56,"product":64,"version":58,"criteria":65,"vulnerable":4},"codeready_linux_builder_for_power_little_endian","cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian:8.0:*:*:*:*:*:*:*",{"vendor":56,"product":67,"version":58,"criteria":68,"vulnerable":4},"enterprise_linux","cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",{"vendor":56,"product":70,"version":71,"criteria":72,"vulnerable":4},"enterprise_linux_eus","8.4","cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*",{"vendor":56,"product":74,"version":58,"criteria":75,"vulnerable":4},"enterprise_linux_for_ibm_z_systems","cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*",{"vendor":56,"product":77,"version":71,"criteria":78,"vulnerable":4},"enterprise_linux_for_ibm_z_systems_eus","cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*",{"vendor":56,"product":80,"version":58,"criteria":81,"vulnerable":4},"enterprise_linux_for_power_little_endian","cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*",{"vendor":56,"product":83,"version":71,"criteria":84,"vulnerable":4},"enterprise_linux_for_power_little_endian_eus","cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:*",{"vendor":56,"product":86,"version":71,"criteria":87,"vulnerable":4},"enterprise_linux_server_aus","cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*",{"vendor":56,"product":89,"version":71,"criteria":90,"vulnerable":4},"enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions","cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*",{"vendor":56,"product":92,"version":71,"criteria":93,"vulnerable":4},"enterprise_linux_server_tus","cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*",{"vendor":56,"product":95,"version":71,"criteria":96,"vulnerable":4},"enterprise_linux_server_update_services_for_sap_solutions","cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*",{"vendor":98,"product":99,"version":100,"criteria":101,"vulnerable":4},"fedoraproject","extra_packages_for_enterprise_linux","7.0","cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:7.0:*:*:*:*:*:*:*",{"vendor":98,"product":103,"version":104,"criteria":105,"vulnerable":4},"fedora","33","cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",{"vendor":98,"product":103,"version":107,"criteria":108,"vulnerable":4},"34","cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",{"vendor":98,"product":103,"version":110,"criteria":111,"vulnerable":4},"35","cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*",{"vendor":98,"product":103,"version":113,"criteria":114,"vulnerable":4},"36","cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*",{"vendor":116,"product":117,"version":118,"criteria":119,"vulnerable":4},"netapp","management_services_for_element_software_and_netapp_hci","-","cpe:2.3:a:netapp:management_services_for_element_software_and_netapp_hci:-:*:*:*:*:*:*:*",{"vendor":116,"product":121,"version":118,"criteria":122,"vulnerable":4},"ontap_select_deploy_administration_utility","cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*",{"vendor":116,"product":124,"version":118,"criteria":125,"vulnerable":4},"solidfire\\,_enterprise_sds_\\&_hci_storage_node","cpe:2.3:a:netapp:solidfire\\,_enterprise_sds_\\&_hci_storage_node:-:*:*:*:*:*:*:*",{"vendor":116,"product":127,"version":118,"criteria":128,"vulnerable":4},"hci_compute_node_firmware","cpe:2.3:o:netapp:hci_compute_node_firmware:-:*:*:*:*:*:*:*",24,[131,139,144,148,151,155,158,162,166,168,170,172,174,176,178,181,183],{"url":132,"source":133,"tags":134},"https:\u002F\u002Fbugs.python.org\u002Fissue43075","Python",[135,136,137,138],"Exploit","Issue Tracking","Patch","Vendor Advisory",{"url":140,"source":141,"tags":142},"https:\u002F\u002Fbugzilla.redhat.com\u002Fshow_bug.cgi?id=1995234","Red Hat",[136,143],"Third Party Advisory",{"url":145,"source":146,"tags":147},"https:\u002F\u002Fgithub.com\u002Fpython\u002Fcpython\u002Fcommit\u002F7215d1ae25525c92b026166f9d5cac85fb","GitHub",[137,143],{"url":149,"source":146,"tags":150},"https:\u002F\u002Fgithub.com\u002Fpython\u002Fcpython\u002Fpull\u002F24391",[137,143],{"url":152,"source":153,"tags":154},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2023\u002F05\u002Fmsg00024.html","Debian",[],{"url":156,"source":153,"tags":157},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2023\u002F06\u002Fmsg00039.html",[],{"url":159,"source":160,"tags":161},"https:\u002F\u002Fsecurity.netapp.com\u002Fadvisory\u002Fntap-20220407-0001\u002F","Netapp",[143],{"url":163,"source":164,"tags":165},"https:\u002F\u002Fubuntu.com\u002Fsecurity\u002FCVE-2021-3733","Ubuntu",[137,143],{"url":132,"source":133,"tags":167},[135,136,137,138],{"url":140,"source":141,"tags":169},[136,143],{"url":145,"source":146,"tags":171},[137,143],{"url":149,"source":146,"tags":173},[137,143],{"url":152,"source":153,"tags":175},[],{"url":156,"source":153,"tags":177},[],{"url":179,"source":153,"tags":180},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2024\u002F12\u002Fmsg00000.html",[],{"url":159,"source":160,"tags":182},[143],{"url":163,"source":164,"tags":184},[137,143],17,[187],{"id":188,"name":189,"description":190,"extendedDescription":191,"status":192,"abstraction":193,"structure":194},"CWE-400","Uncontrolled Resource Consumption","The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.","Limited resources include memory, file system storage, database connection pool entries, and CPU. If an attacker can trigger the allocation of these limited resources, but the number or size of the resources is not controlled, then the attacker could cause a denial of service that consumes all available resources. This would prevent valid users from accessing the product, and it could potentially have an impact on the surrounding environment. For example, a memory exhaustion attack against an application could slow down the application as well as its host operating system.\nThere are at least three distinct scenarios which can commonly lead to resource exhaustion:\nResource exhaustion problems are often result due to an incorrect implementation of the following situations:","Draft","Class","Simple",1,[],{"title":198,"metaDescription":199,"keywords":200,"canonicalUrl":201,"structuredData":202},"What is CVE-2021-3733? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-3733, a medium severity cyber security vulnerability from 2022. There's a flaw in urllib's AbstractBasicAuthHandler class....","CVE-2021-3733, CVE-2021-3733 vulnerability, CVE-2021-3733 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2022, CVSS score, exploit, patch, remediation, python security, redhat security, python vulnerability, codeready_linux_builder vulnerability, codeready_linux_builder_for_ibm_z_systems vulnerability, codeready_linux_builder_for_power_little_endian vulnerability, enterprise_linux vulnerability","\u002Fwhat-is\u002Fcve-2021-3733",{"@context":203,"@type":204,"headline":198,"description":199,"datePublished":10,"dateModified":11,"author":205,"publisher":209,"about":213,"mainEntityOfPage":217,"articleSection":220,"keywords":221},"https:\u002F\u002Fschema.org","TechArticle",{"@type":206,"name":207,"url":208},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":206,"name":207,"url":208,"logo":210},{"@type":211,"url":212},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":214,"name":6,"description":215,"additionalType":216},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":218,"@id":219},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-3733","Cybersecurity","CVE-2021-3733, CVE-2021-3733 vulnerability, CVE-2021-3733 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[223,245,275,289],{"Operator":27,"Negate":27,"Nodes":224},[225],{"Operator":226,"Negate":42,"CPEMatch":227},"OR",[228,231,235,239,243],{"Vulnerable":4,"Criteria":51,"MatchCriteriaID":229,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":230,"VersionEndIncluding":27},"C0AA4B12-CF3C-4327-983C-9067D7D97B57","3.6.14",{"Vulnerable":4,"Criteria":51,"MatchCriteriaID":232,"VersionStartExcluding":27,"VersionStartIncluding":233,"VersionEndExcluding":234,"VersionEndIncluding":27},"63D83236-D590-43D4-82C0-B0C656E02A29","3.7.0","3.7.11",{"Vulnerable":4,"Criteria":51,"MatchCriteriaID":236,"VersionStartExcluding":27,"VersionStartIncluding":237,"VersionEndExcluding":238,"VersionEndIncluding":27},"2F85FAB1-4A42-447A-AC58-ED818123BDDC","3.8.0","3.8.10",{"Vulnerable":4,"Criteria":51,"MatchCriteriaID":240,"VersionStartExcluding":27,"VersionStartIncluding":241,"VersionEndExcluding":242,"VersionEndIncluding":27},"91FD0AF9-B011-4238-8CF1-BDEA0399AF82","3.9.0","3.9.5",{"Vulnerable":4,"Criteria":54,"MatchCriteriaID":244,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"36027ED3-D643-4ACE-A43C-725C8E0BD99F",{"Operator":27,"Negate":27,"Nodes":246},[247],{"Operator":226,"Negate":42,"CPEMatch":248},[249,251,253,255,257,259,261,263,265,267,269,271,273],{"Vulnerable":4,"Criteria":59,"MatchCriteriaID":250,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"93A089E2-D66E-455C-969A-3140D991BAF4",{"Vulnerable":4,"Criteria":62,"MatchCriteriaID":252,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"4131A8B1-AC09-4C2D-8C7A-8D4AA10CB8FD",{"Vulnerable":4,"Criteria":65,"MatchCriteriaID":254,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"5F48D0CB-CB06-4456-B918-6549BC6C7892",{"Vulnerable":4,"Criteria":68,"MatchCriteriaID":256,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"F4CFF558-3C47-480D-A2F0-BABF26042943",{"Vulnerable":4,"Criteria":72,"MatchCriteriaID":258,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"0E3F09B5-569F-4C58-9FCA-3C0953D107B5",{"Vulnerable":4,"Criteria":75,"MatchCriteriaID":260,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"87C21FE1-EA5C-498F-9C6C-D05F91A88217",{"Vulnerable":4,"Criteria":78,"MatchCriteriaID":262,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"8C9BD9AE-46FC-4609-8D99-A3CFE91D58D1",{"Vulnerable":4,"Criteria":81,"MatchCriteriaID":264,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"47811209-5CE5-4375-8391-B0A7F6A0E420",{"Vulnerable":4,"Criteria":84,"MatchCriteriaID":266,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"983533DD-3970-4A37-9A9C-582BD48AA1E5",{"Vulnerable":4,"Criteria":87,"MatchCriteriaID":268,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"E28F226A-CBC7-4A32-BE58-398FA5B42481",{"Vulnerable":4,"Criteria":90,"MatchCriteriaID":270,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"22D095ED-9247-4133-A133-73B7668565E4",{"Vulnerable":4,"Criteria":93,"MatchCriteriaID":272,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"AC10D919-57FD-4725-B8D2-39ECB476902F",{"Vulnerable":4,"Criteria":96,"MatchCriteriaID":274,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"BC6DD887-9744-43EA-8B3C-44C6B6339590",{"Operator":27,"Negate":27,"Nodes":276},[277],{"Operator":226,"Negate":42,"CPEMatch":278},[279,281,283,285,287],{"Vulnerable":4,"Criteria":101,"MatchCriteriaID":280,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"3D9C7598-4BB4-442A-86DF-EEDE041A4CC7",{"Vulnerable":4,"Criteria":105,"MatchCriteriaID":282,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"E460AA51-FCDA-46B9-AE97-E6676AA5E194",{"Vulnerable":4,"Criteria":108,"MatchCriteriaID":284,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"A930E247-0B43-43CB-98FF-6CE7B8189835",{"Vulnerable":4,"Criteria":111,"MatchCriteriaID":286,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"80E516C0-98A4-4ADE-B69F-66A772E2BAAA",{"Vulnerable":4,"Criteria":114,"MatchCriteriaID":288,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD",{"Operator":27,"Negate":27,"Nodes":290},[291],{"Operator":226,"Negate":42,"CPEMatch":292},[293,295,297,299],{"Vulnerable":4,"Criteria":119,"MatchCriteriaID":294,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"FDAC85F0-93AF-4BE3-AE1A-8ADAF1CDF9AB",{"Vulnerable":4,"Criteria":122,"MatchCriteriaID":296,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"E7CF3019-975D-40BB-A8A4-894E62BD3797",{"Vulnerable":4,"Criteria":125,"MatchCriteriaID":298,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"DAA3919C-B2B1-4CB5-BA76-7A079AAFFC52",{"Vulnerable":4,"Criteria":128,"MatchCriteriaID":300,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"F921BC85-568E-4B69-A3CD-CF75C76672F1",[],[],{"lastModified":11,"cacheTime":304,"version":34},1792264281037,{"score":306,"band":46,"action":307,"scoredAt":308},51,"Plan remediation","2026-10-16T06:53:44.422319+00:00"]