[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fSitmfPeBKKRMTIsrtSOau2dQqo1_1L8OTCoTqicqCV8":3,"g5a-risk:CVE-2023-35926":112},{"success":4,"data":5,"meta":109},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":37,"epssPercentile":27,"epssTimeSeries":38,"severity":39,"affectedProducts":40,"affectedProductsCount":46,"references":47,"referencesCount":61,"weaknesses":62,"weaknessesCount":46,"isActivelyExploited":71,"cisaInfo":27,"otxData":27,"relatedBlogPosts":72,"seoMetadata":73,"configurations":98,"relatedVendorCves":107,"notableEvents":108},"CVE-2023-35926","What is CVE-2023-35926?","Backstage is an open platform for building developer portals. The Backstage scaffolder-backend plugin uses a templating library that requires sandbox, as it by design allows for code injection. The library used for this sandbox so far has been `vm2`, but in light of several past vulnerabilities and existing vulnerabilities  that may not have a fix, the plugin has switched to using a different sandbox library. A malicious actor with write access to a registered scaffolder template could manipulate the template in a way that allows for remote code execution on the scaffolder-backend instance. This was only exploitable in the template YAML definition itself and not by user input data. This is vulnerability is fixed in version 1.15.0 of `@backstage\u002Fplugin-scaffolder-backend`.","Backstage is an open platform for building developer portals. The Backstage scaffolder-backend plugin uses a templating library that requires sandbox, as it ...","2023-06-22T14:15:09.607","2023-06-29T20:54:47.117",9.9,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:L\u002FUI:N\u002FS:C\u002FC:H\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":27,"CVSSMetricV2":27,"CVSSMetricV40":27},[16,30],{"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":25,"IntegrityImpact":25,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":25,"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","CHANGED","HIGH","CRITICAL",null,3.1,6,{"Source":31,"Type":32,"CVSSData":33,"ExploitabilityScore":36,"ImpactScore":29},"security-advisories@github.com","Secondary",{"Version":20,"VectorString":34,"AttackVector":21,"AttackComplexity":25,"PrivilegesRequired":25,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":25,"IntegrityImpact":25,"AvailabilityImpact":25,"BaseScore":35,"BaseSeverity":25,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":25,"ModifiedAttackVector":27,"ModifiedAttackComplexity":27,"ModifiedPrivilegesRequired":27,"ModifiedUserInteraction":27,"ModifiedScope":27,"ModifiedConfidentialityImpact":27,"ModifiedIntegrityImpact":27,"ModifiedAvailabilityImpact":27,"EnvironmentalScore":27,"EnvironmentalSeverity":27},"CVSS:3.1\u002FAV:N\u002FAC:H\u002FPR:H\u002FUI:N\u002FS:C\u002FC:H\u002FI:H\u002FA:H",8,1.3,0.01888,[37,37,37,37,37,37,37],"Critical",[41],{"vendor":42,"product":43,"version":44,"criteria":45,"vulnerable":4},"linuxfoundation","backstage","*","cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*",1,[48,53,57],{"url":49,"source":50,"tags":51},"https:\u002F\u002Fgithub.com\u002Fbackstage\u002Fbackstage\u002Fcommit\u002Ffb7375507d56faedcb7bb3665480070593c8949a","GitHub",[52],"Patch",{"url":54,"source":50,"tags":55},"https:\u002F\u002Fgithub.com\u002Fbackstage\u002Fbackstage\u002Freleases\u002Ftag\u002Fv1.15.0",[56],"Release Notes",{"url":58,"source":50,"tags":59},"https:\u002F\u002Fgithub.com\u002Fbackstage\u002Fbackstage\u002Fsecurity\u002Fadvisories\u002FGHSA-wg6p-jmpc-xjmr",[60],"Vendor Advisory",3,[63],{"id":64,"name":65,"description":66,"extendedDescription":67,"status":68,"abstraction":69,"structure":70},"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",false,[],{"title":74,"metaDescription":75,"keywords":76,"canonicalUrl":77,"structuredData":78},"What is CVE-2023-35926? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2023-35926, a critical severity cyber security vulnerability from 2023. Backstage is an open platform for building developer po...","CVE-2023-35926, CVE-2023-35926 vulnerability, CVE-2023-35926 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2023, CVSS score, exploit, patch, remediation, linuxfoundation security, backstage vulnerability","\u002Fwhat-is\u002Fcve-2023-35926",{"@context":79,"@type":80,"headline":74,"description":75,"datePublished":10,"dateModified":11,"author":81,"publisher":85,"about":89,"mainEntityOfPage":93,"articleSection":96,"keywords":97},"https:\u002F\u002Fschema.org","TechArticle",{"@type":82,"name":83,"url":84},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":82,"name":83,"url":84,"logo":86},{"@type":87,"url":88},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":90,"name":6,"description":91,"additionalType":92},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":94,"@id":95},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2023-35926","Cybersecurity","CVE-2023-35926, CVE-2023-35926 vulnerability, CVE-2023-35926 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[99],{"Operator":27,"Negate":27,"Nodes":100},[101],{"Operator":102,"Negate":27,"CPEMatch":103},"OR",[104],{"Vulnerable":4,"Criteria":45,"MatchCriteriaID":105,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":106,"VersionEndIncluding":27},"41D3145E-0089-49C3-AFAA-7994C26E230A","1.15.0",[],[],{"lastModified":11,"cacheTime":110,"version":111},1792437260694,"2.0",{"score":113,"band":114,"action":115,"scoredAt":116},56,"Medium","Plan remediation","2026-10-16T06:58:21.801735+00:00"]