[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fbZlI1nRCsNWAByIY-EfoaKr9wVrxv-KfXgQSD1PashU":3,"g5a-risk:CVE-2021-43783":118},{"success":4,"data":5,"meta":116},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":44,"epssPercentile":26,"epssTimeSeries":45,"severity":46,"affectedProducts":47,"affectedProductsCount":53,"references":54,"referencesCount":68,"weaknesses":69,"weaknessesCount":53,"isActivelyExploited":78,"cisaInfo":26,"otxData":26,"relatedBlogPosts":79,"seoMetadata":80,"configurations":105,"relatedVendorCves":114,"notableEvents":115},"CVE-2021-43783","What is CVE-2021-43783?","@backstage\u002Fplugin-scaffolder-backend is the backend for the default Backstage software templates. In affected versions a malicious actor with write access to a registered scaffolder template is able to manipulate the template in a way that writes files to arbitrary paths on the scaffolder-backend host instance. This vulnerability can in some situation also be exploited through user input when executing a template, meaning you do not need write access to the templates. This method will not allow the attacker to control the contents of the injected file however, unless the template is also crafted in a specific way that gives control of the file contents. This vulnerability is fixed in version `0.15.14` of the `@backstage\u002Fplugin-scaffolder-backend`. This attack is mitigated by restricting access and requiring reviews when registering or modifying scaffolder templates.","@backstage\u002Fplugin-scaffolder-backend is the backend for the default Backstage software templates. In affected versions a malicious actor with write access to...","2021-11-29T20:15:08.077","2025-01-03T14:52:50.143",8.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:L\u002FUI:N\u002FS:C\u002FC:N\u002FI:H\u002FA:L",{"CVSSMetricV31":15,"CVSSMetricV30":26,"CVSSMetricV2":33,"CVSSMetricV40":26},[16,29],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":27,"ImpactScore":28},"security-advisories@github.com","Secondary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":22,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":25,"AvailabilityImpact":22,"BaseScore":12,"BaseSeverity":25,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":22,"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","CHANGED","HIGH",null,3.1,4.7,{"Source":30,"Type":31,"CVSSData":32,"ExploitabilityScore":27,"ImpactScore":28},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":22,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":25,"AvailabilityImpact":22,"BaseScore":12,"BaseSeverity":25,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":22,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},[34],{"Source":30,"Type":31,"CVSSData":35,"BaseSeverity":41,"ExploitabilityScore":42,"ImpactScore":43,"ACInsufInfo":26,"ObtainAllPrivilege":26,"ObtainUserPrivilege":26,"ObtainOtherPrivilege":26,"UserInteractionRequired":26},{"Version":36,"VectorString":37,"AccessVector":21,"AccessComplexity":22,"Authentication":38,"ConfidentialityImpact":23,"IntegrityImpact":39,"AvailabilityImpact":39,"BaseScore":40,"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:N\u002FI:P\u002FA:P","SINGLE","PARTIAL",5.5,"MEDIUM",8,4.9,0.01246,[44,44,44,44,44,44,44],"High",[48],{"vendor":49,"product":50,"version":51,"criteria":52,"vulnerable":4},"linuxfoundation","backstage","*","cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*",1,[55,61,64,66],{"url":56,"source":57,"tags":58},"https:\u002F\u002Fgithub.com\u002Fbackstage\u002Fbackstage\u002Fcommit\u002Ff9352ab606367cd9efc6ff048915c70ed3013b7f","GitHub",[59,60],"Patch","Third Party Advisory",{"url":62,"source":57,"tags":63},"https:\u002F\u002Fgithub.com\u002Fbackstage\u002Fbackstage\u002Fsecurity\u002Fadvisories\u002FGHSA-mg3m-f475-28hv",[60],{"url":56,"source":57,"tags":65},[59,60],{"url":62,"source":57,"tags":67},[60],4,[70],{"id":71,"name":72,"description":73,"extendedDescription":74,"status":75,"abstraction":76,"structure":77},"CWE-22","Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.","Many file operations are intended to take place within a restricted directory. By using special elements such as \"..\" and \"\u002F\" separators, attackers can escape outside of the restricted location to access files or directories that are elsewhere on the system. One of the most common special elements is the \"..\u002F\" sequence, which in most modern operating systems is interpreted as the parent directory of the current location. This is referred to as relative path traversal. Path traversal also covers the use of absolute pathnames such as \"\u002Fusr\u002Flocal\u002Fbin\" to access unexpected files. This is referred to as absolute path traversal.","Stable","Base","Simple",false,[],{"title":81,"metaDescription":82,"keywords":83,"canonicalUrl":84,"structuredData":85},"What is CVE-2021-43783? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-43783, a high severity cyber security vulnerability from 2021. @backstage\u002Fplugin-scaffolder-backend is the backend for the...","CVE-2021-43783, CVE-2021-43783 vulnerability, CVE-2021-43783 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2021, CVSS score, exploit, patch, remediation, linuxfoundation security, backstage vulnerability","\u002Fwhat-is\u002Fcve-2021-43783",{"@context":86,"@type":87,"headline":81,"description":82,"datePublished":10,"dateModified":11,"author":88,"publisher":92,"about":96,"mainEntityOfPage":100,"articleSection":103,"keywords":104},"https:\u002F\u002Fschema.org","TechArticle",{"@type":89,"name":90,"url":91},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":89,"name":90,"url":91,"logo":93},{"@type":94,"url":95},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":97,"name":6,"description":98,"additionalType":99},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":101,"@id":102},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-43783","Cybersecurity","CVE-2021-43783, CVE-2021-43783 vulnerability, CVE-2021-43783 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[106],{"Operator":26,"Negate":26,"Nodes":107},[108],{"Operator":109,"Negate":26,"CPEMatch":110},"OR",[111],{"Vulnerable":4,"Criteria":52,"MatchCriteriaID":112,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":113,"VersionEndIncluding":26},"3983C003-B182-4718-9390-D862FBF9687A","0.15.14",[],[],{"lastModified":11,"cacheTime":117,"version":36},1792437260740,{"score":119,"band":120,"action":121,"scoredAt":122},47,"Medium","Plan remediation","2026-10-16T06:52:33.997445+00:00"]