[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fe7Fz9qfoc_9nMo0i5jYDutpoVjpZW1FOdwP3LSlsK5U":3,"g5a-risk:CVE-2020-26275":123},{"success":4,"data":5,"meta":121},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":45,"affectedProducts":46,"affectedProductsCount":52,"references":53,"referencesCount":73,"weaknesses":74,"weaknessesCount":52,"isActivelyExploited":83,"cisaInfo":27,"otxData":27,"relatedBlogPosts":84,"seoMetadata":85,"configurations":110,"relatedVendorCves":119,"notableEvents":120},"CVE-2020-26275","What is CVE-2020-26275?","The Jupyter Server provides the backend (i.e. the core services, APIs, and REST endpoints) for Jupyter web applications like Jupyter notebook, JupyterLab, and Voila. In Jupyter Server before version 1.1.1, an open redirect vulnerability could cause the jupyter server to redirect the browser to a different malicious website. All jupyter servers running without a base_url prefix are technically affected, however, these maliciously crafted links can only be reasonably made for known jupyter server hosts. A link to your jupyter server may *appear* safe, but ultimately redirect to a spoofed server on the public internet. This same vulnerability was patched in upstream notebook v5.7.8. This is fixed in jupyter_server 1.1.1. If upgrade is not available, a workaround can be to run your server on a url prefix: \"jupyter server --ServerApp.base_url=\u002Fjupyter\u002F\".","The Jupyter Server provides the backend (i.e. the core services, APIs, and REST endpoints) for Jupyter web applications like Jupyter notebook, JupyterLab, an...","2020-12-21T18:15:15.353","2022-08-06T03:46:12.4",6.1,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:R\u002FS:C\u002FC:L\u002FI:L\u002FA:N",{"CVSSMetricV31":15,"CVSSMetricV30":27,"CVSSMetricV2":34,"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":23,"UserInteraction":24,"Scope":25,"ConfidentialityImpact":22,"IntegrityImpact":22,"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","NONE","REQUIRED","CHANGED","MEDIUM",null,2.8,2.7,{"Source":31,"Type":32,"CVSSData":33,"ExploitabilityScore":28,"ImpactScore":29},"security-advisories@github.com","Secondary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":24,"Scope":25,"ConfidentialityImpact":22,"IntegrityImpact":22,"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},[35],{"Source":17,"Type":18,"CVSSData":36,"BaseSeverity":26,"ExploitabilityScore":41,"ImpactScore":42,"ACInsufInfo":27,"ObtainAllPrivilege":27,"ObtainUserPrivilege":27,"ObtainOtherPrivilege":27,"UserInteractionRequired":4},{"Version":37,"VectorString":38,"AccessVector":21,"AccessComplexity":26,"Authentication":23,"ConfidentialityImpact":39,"IntegrityImpact":39,"AvailabilityImpact":23,"BaseScore":40,"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:N\u002FC:P\u002FI:P\u002FA:N","PARTIAL",5.8,8.6,4.9,0.01373,[43,43,43,43,43,43,43],"Medium",[47],{"vendor":48,"product":49,"version":50,"criteria":51,"vulnerable":4},"jupyter","jupyter_server","*","cpe:2.3:a:jupyter:jupyter_server:*:*:*:*:*:*:*:*",1,[54,60,65,68],{"url":55,"source":56,"tags":57},"https:\u002F\u002Fadvisory.checkmarx.net\u002Fadvisory\u002FCX-2020-4291","Checkmarx",[58,59],"Exploit","Third Party Advisory",{"url":61,"source":62,"tags":63},"https:\u002F\u002Fgithub.com\u002Fjupyter-server\u002Fjupyter_server\u002Fcommit\u002F85e4abccf6ea9321d29153f73b0bd72ccb3a6bca","GitHub",[64,59],"Patch",{"url":66,"source":62,"tags":67},"https:\u002F\u002Fgithub.com\u002Fjupyter-server\u002Fjupyter_server\u002Fsecurity\u002Fadvisories\u002FGHSA-9f66-54xg-pc2c",[64,59],{"url":69,"source":70,"tags":71},"https:\u002F\u002Fpypi.org\u002Fproject\u002Fjupyter-server\u002F","Pypi",[72],"Product",4,[75],{"id":76,"name":77,"description":78,"extendedDescription":79,"status":80,"abstraction":81,"structure":82},"CWE-601","URL Redirection to Untrusted Site ('Open Redirect')","A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks.","An http parameter may contain a URL value and could cause the web application to redirect the request to the specified URL. By modifying the URL value to a malicious site, an attacker may successfully launch a phishing scam and steal user credentials. Because the server name in the modified link is identical to the original site, phishing attempts have a more trustworthy appearance. Whether this issue poses a vulnerability will be subject to the intended behavior of the application. For example, a search engine might intentionally provide redirects to arbitrary URLs.","Draft","Base","Simple",false,[],{"title":86,"metaDescription":87,"keywords":88,"canonicalUrl":89,"structuredData":90},"What is CVE-2020-26275? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2020-26275, a medium severity cyber security vulnerability from 2020. The Jupyter Server provides the backend (i.e. the core se...","CVE-2020-26275, CVE-2020-26275 vulnerability, CVE-2020-26275 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2020, CVSS score, exploit, patch, remediation, jupyter security, jupyter_server vulnerability","\u002Fwhat-is\u002Fcve-2020-26275",{"@context":91,"@type":92,"headline":86,"description":87,"datePublished":10,"dateModified":11,"author":93,"publisher":97,"about":101,"mainEntityOfPage":105,"articleSection":108,"keywords":109},"https:\u002F\u002Fschema.org","TechArticle",{"@type":94,"name":95,"url":96},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":94,"name":95,"url":96,"logo":98},{"@type":99,"url":100},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":102,"name":6,"description":103,"additionalType":104},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":106,"@id":107},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2020-26275","Cybersecurity","CVE-2020-26275, CVE-2020-26275 vulnerability, CVE-2020-26275 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[111],{"Operator":27,"Negate":27,"Nodes":112},[113],{"Operator":114,"Negate":27,"CPEMatch":115},"OR",[116],{"Vulnerable":4,"Criteria":51,"MatchCriteriaID":117,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":118,"VersionEndIncluding":27},"DAD6EDDB-7D93-4E81-9CBF-9B78858D0039","1.1.1",[],[],{"lastModified":11,"cacheTime":122,"version":37},1792276949547,{"score":124,"band":45,"action":125,"scoredAt":126},45,"Plan remediation","2026-10-16T06:50:06.796709+00:00"]