[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fCrO5I5PXa1j0AJUh8-M3Frp_Lmg7QTVVi0Ud_xnB7nM":3,"g5a-risk:CVE-2021-44521":154},{"success":4,"data":5,"meta":152},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":41,"epssPercentile":27,"epssTimeSeries":42,"severity":43,"affectedProducts":44,"affectedProductsCount":50,"references":51,"referencesCount":74,"weaknesses":75,"weaknessesCount":90,"isActivelyExploited":91,"cisaInfo":27,"otxData":27,"relatedBlogPosts":92,"seoMetadata":93,"configurations":118,"relatedVendorCves":136,"notableEvents":137},"CVE-2021-44521","What is CVE-2021-44521?","When running Apache Cassandra with the following configuration: enable_user_defined_functions: true enable_scripted_user_defined_functions: true enable_user_defined_functions_threads: false it is possible for an attacker to execute arbitrary code on the host. The attacker would need to have enough permissions to create user defined functions in the cluster to be able to exploit this. Note that this configuration is documented as unsafe, and will continue to be considered unsafe after this CVE.","When running Apache Cassandra with the following configuration: enable_user_defined_functions: true enable_scripted_user_defined_functions: true enable_user_...","2022-02-11T13:15:07.907","2022-08-09T00:39:07.85",9.1,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:H\u002FUI:N\u002FS:C\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":24,"Scope":25,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":23,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":23,"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","CHANGED","CRITICAL",null,2.3,6,[31],{"Source":17,"Type":18,"CVSSData":32,"BaseSeverity":23,"ExploitabilityScore":39,"ImpactScore":40,"ACInsufInfo":27,"ObtainAllPrivilege":27,"ObtainUserPrivilege":27,"ObtainOtherPrivilege":27,"UserInteractionRequired":27},{"Version":33,"VectorString":34,"AccessVector":21,"AccessComplexity":35,"Authentication":36,"ConfidentialityImpact":37,"IntegrityImpact":37,"AvailabilityImpact":37,"BaseScore":38,"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:M\u002FAu:S\u002FC:C\u002FI:C\u002FA:C","MEDIUM","SINGLE","COMPLETE",8.5,6.8,10,0.57528,[41,41,41,41,41,41,41],"Critical",[45],{"vendor":46,"product":47,"version":48,"criteria":49,"vulnerable":4},"apache","cassandra","*","cpe:2.3:a:apache:cassandra:*:*:*:*:*:*:*:*",1,[52,58,64,70],{"url":53,"source":54,"tags":55},"http:\u002F\u002Fwww.openwall.com\u002Flists\u002Foss-security\u002F2022\u002F02\u002F11\u002F4","Openwall",[56,57],"Mailing List","Third Party Advisory",{"url":59,"source":60,"tags":61},"https:\u002F\u002Fjfrog.com\u002Fblog\u002Fcve-2021-44521-exploiting-apache-cassandra-user-defined-functions-for-remote-code-execution\u002F","Jfrog",[62,63,57],"Exploit","Mitigation",{"url":65,"source":66,"tags":67},"https:\u002F\u002Flists.apache.org\u002Fthread\u002Fy4nb9s4co34j8hdfmrshyl09lokm7356","Apache",[68,56,69],"Issue Tracking","Vendor Advisory",{"url":71,"source":72,"tags":73},"https:\u002F\u002Fsecurity.netapp.com\u002Fadvisory\u002Fntap-20220225-0001\u002F","Netapp",[57],4,[76,84],{"id":77,"name":78,"description":79,"extendedDescription":80,"status":81,"abstraction":82,"structure":83},"CWE-94","Improper Control of Generation of Code ('Code Injection')","The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.","When a product allows a user's input to contain code syntax, it might be possible for an attacker to craft the code in such a way that it will alter the intended control flow of the product. Such an alteration could lead to arbitrary code execution.\nInjection problems encompass a wide variety of issues -- all mitigated in very different ways. For this reason, the most effective way to discuss these weaknesses is to note the distinct features which 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. The most classic instantiations of this category of weakness are SQL injection and format string vulnerabilities.","Draft","Base","Simple",{"id":85,"name":86,"description":87,"extendedDescription":88,"status":81,"abstraction":89,"structure":83},"CWE-732","Incorrect Permission Assignment for Critical Resource","The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.","When a resource is given a permission setting that provides access to a wider range of actors than required, it could lead to the exposure of sensitive information, or the modification of that resource by unintended parties. This is especially dangerous when the resource is related to program configuration, execution, or sensitive user data. For example, consider a misconfigured storage account for the cloud that can be read or written by a public or anonymous user.","Class",2,false,[],{"title":94,"metaDescription":95,"keywords":96,"canonicalUrl":97,"structuredData":98},"What is CVE-2021-44521? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-44521, a critical severity cyber security vulnerability from 2022. High exploit probability (57.5%). When running Apache C...","CVE-2021-44521, CVE-2021-44521 vulnerability, CVE-2021-44521 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2022, CVSS score, exploit, patch, remediation, apache security, cassandra vulnerability, high risk vulnerability, actively exploited, exploit available","\u002Fwhat-is\u002Fcve-2021-44521",{"@context":99,"@type":100,"headline":94,"description":95,"datePublished":10,"dateModified":11,"author":101,"publisher":105,"about":109,"mainEntityOfPage":113,"articleSection":116,"keywords":117},"https:\u002F\u002Fschema.org","TechArticle",{"@type":102,"name":103,"url":104},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":102,"name":103,"url":104,"logo":106},{"@type":107,"url":108},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":110,"name":6,"description":111,"additionalType":112},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":114,"@id":115},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-44521","Cybersecurity","CVE-2021-44521, CVE-2021-44521 vulnerability, CVE-2021-44521 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[119],{"Operator":27,"Negate":27,"Nodes":120},[121],{"Operator":122,"Negate":27,"CPEMatch":123},"OR",[124,128,132],{"Vulnerable":4,"Criteria":49,"MatchCriteriaID":125,"VersionStartExcluding":27,"VersionStartIncluding":126,"VersionEndExcluding":127,"VersionEndIncluding":27},"8DC06A32-4458-44A4-B6DD-EA9BFD362D09","3.0.0","3.0.26",{"Vulnerable":4,"Criteria":49,"MatchCriteriaID":129,"VersionStartExcluding":27,"VersionStartIncluding":130,"VersionEndExcluding":131,"VersionEndIncluding":27},"AF6C2BFF-2F8A-40B8-85E5-3C6C658C3A97","3.11.0","3.11.12",{"Vulnerable":4,"Criteria":49,"MatchCriteriaID":133,"VersionStartExcluding":27,"VersionStartIncluding":134,"VersionEndExcluding":135,"VersionEndIncluding":27},"B1FBC157-F7A5-43F5-B416-354C3B28F78A","4.0.0","4.0.2",[],[138,145],{"id":139,"eventType":140,"eventTime":141,"details":142,"label":143,"color":144},"08aaa706-9cac-4294-9866-175cc71339e1","LOW_EPSS_DELTA","2025-11-19T04:05:52.206726+00:00","Daily EPSS score decreased by 0.279 on 2023-12-30","EPSS Score Decreased","green",{"id":146,"eventType":147,"eventTime":148,"details":149,"label":150,"color":151},"81a032fb-6467-4637-aa93-2b9a1eaea7ab","HIGH_EPSS_DELTA","2025-11-22T04:05:40.891865+00:00","Daily EPSS score increased by 0.279 on 2023-12-30","EPSS Score Increased","red",{"lastModified":11,"cacheTime":153,"version":33},1792344856581,{"score":155,"band":156,"action":157,"scoredAt":158},61,"Medium","Plan remediation","2026-10-16T06:53:29.737918+00:00"]