CVE-2020-26275

{"containers": {"cna": {"affected": [{"product": "jupyter_server", "vendor": "jupyter-server", "versions": [{"status": "affected", "version": "< 1.1.1"}]}], "descriptions": [{"lang": "en", "value": "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. 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{"affected": [{"affectedData": [{"product": "jupyter_server", "vendor": "jupyter-server", "versions": [{"status": "affected", "version": "< 1.1.1"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:jupyter:jupyter_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "DAD6EDDB-7D93-4E81-9CBF-9B78858D0039", "versionEndExcluding": "1.1.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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=/jupyter/\"."}, {"lang": "es", "value": "Jupyter Server proporciona el backend (es decir, los servicios centrales, las API y los endpoints REST) ??para las aplicaciones web de Jupyter como Jupyter notebook, JupyterLab y Voila.&#xa0;En Jupyter Server versiones anteriores a 1.1.1, una vulnerabilidad de redireccionamiento abierto podr\u00eda causar que el servidor jupyter redireccione el navegador hacia un sitio web malicioso diferente.&#xa0;Todos los servidores jupyter que se ejecutan sin un prefijo base_url est\u00e1n t\u00e9cnicamente afectados; sin embargo, estos enlaces dise\u00f1ados maliciosamente pueden s\u00f3lo ser razonablemente hechos para hosts de servidores jupyter conocidos.&#xa0;Un enlace a su servidor jupyter puede *appear* seguro, pero en \u00faltima instancia, redirigido hacia un servidor falsificado en la Internet p\u00fablica.&#xa0;Esta misma vulnerabilidad fue parcheada en la versi\u00f3n 5.7.8 del port\u00e1til ascendente.&#xa0;Esto se corrigi\u00f3 en jupyter_server versi\u00f3n 1.1.1.&#xa0;Si la actualizaci\u00f3n no est\u00e1 disponible, una soluci\u00f3n alternativa puede ser ejecutar su servidor con un prefijo de url: \"jupyter server --ServerApp.base_url=/jupyter/\""}], "id": "CVE-2020-26275", "lastModified": "2026-06-17T03:07:58.660", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-12-21T18:15:15.353", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://advisory.checkmarx.net/advisory/CX-2020-4291"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/jupyter-server/jupyter_server/commit/85e4abccf6ea9321d29153f73b0bd72ccb3a6bca"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-9f66-54xg-pc2c"}, {"source": "security-advisories@github.com", "tags": ["Product"], "url": "https://pypi.org/project/jupyter-server/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://advisory.checkmarx.net/advisory/CX-2020-4291"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/jupyter-server/jupyter_server/commit/85e4abccf6ea9321d29153f73b0bd72ccb3a6bca"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-9f66-54xg-pc2c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Product"], "url": "https://pypi.org/project/jupyter-server/"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-601"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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