Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/35904?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/35904?format=api", "vulnerability_id": "VCID-v61t-4jv9-j3bv", "summary": "JupyterHub is an open source multi-user server for Jupyter notebooks. In affected versions users who have multiple JupyterLab tabs open in the same browser session, may see incomplete logout from the single-user server, as fresh credentials (for the single-user server only, not the Hub) reinstated after logout, if another active JupyterLab session is open while the logout takes place. Upgrade to JupyterHub 1.5. For distributed deployments, it is jupyterhub in the _user_ environment that needs patching. There are no patches necessary in the Hub environment. The only workaround is to make sure that only one JupyterLab tab is open when you log out.", "aliases": [ { "alias": "CVE-2021-41247" }, { "alias": "GHSA-cw7p-q79f-m2v7" }, { "alias": "PYSEC-2021-386" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/100260?format=api", "purl": "pkg:deb/debian/jupyterhub@2.0.0%2Bds1-1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/jupyterhub@2.0.0%252Bds1-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/100255?format=api", "purl": "pkg:deb/debian/jupyterhub@3.0.0%2Bds1-1?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-g6zf-6yqx-r7gx" }, { "vulnerability": "VCID-jruk-8qvr-d3hh" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/jupyterhub@3.0.0%252Bds1-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/100258?format=api", "purl": "pkg:deb/debian/jupyterhub@5.2.1%2Bds1-4?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/jupyterhub@5.2.1%252Bds1-4%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/100257?format=api", "purl": "pkg:deb/debian/jupyterhub@5.2.1%2Bds1-5?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/jupyterhub@5.2.1%252Bds1-5%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/24852?format=api", "purl": "pkg:pypi/jupyterhub@1.5.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-jruk-8qvr-d3hh" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub@1.5.0" } ], "affected_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/19774?format=api", "purl": "pkg:pypi/jupyterhub@1.0.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-jruk-8qvr-d3hh" }, { "vulnerability": "VCID-n2n2-cfn6-fyau" }, { "vulnerability": "VCID-v61t-4jv9-j3bv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub@1.0.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/19775?format=api", "purl": "pkg:pypi/jupyterhub@1.1.0b1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-jruk-8qvr-d3hh" }, { "vulnerability": "VCID-n2n2-cfn6-fyau" }, { "vulnerability": "VCID-v61t-4jv9-j3bv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub@1.1.0b1" }, { "url": "http://public2.vulnerablecode.io/api/packages/19776?format=api", "purl": "pkg:pypi/jupyterhub@1.1.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-jruk-8qvr-d3hh" }, { "vulnerability": "VCID-n2n2-cfn6-fyau" }, { "vulnerability": "VCID-v61t-4jv9-j3bv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub@1.1.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/19777?format=api", "purl": "pkg:pypi/jupyterhub@1.2.0b1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-jruk-8qvr-d3hh" }, { "vulnerability": "VCID-v61t-4jv9-j3bv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub@1.2.0b1" }, { "url": "http://public2.vulnerablecode.io/api/packages/24845?format=api", "purl": "pkg:pypi/jupyterhub@1.2.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-jruk-8qvr-d3hh" }, { "vulnerability": "VCID-v61t-4jv9-j3bv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub@1.2.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/24846?format=api", "purl": "pkg:pypi/jupyterhub@1.2.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-jruk-8qvr-d3hh" }, { "vulnerability": "VCID-v61t-4jv9-j3bv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub@1.2.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/24847?format=api", "purl": "pkg:pypi/jupyterhub@1.2.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-jruk-8qvr-d3hh" }, { "vulnerability": "VCID-v61t-4jv9-j3bv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub@1.2.2" }, { "url": "http://public2.vulnerablecode.io/api/packages/24848?format=api", "purl": "pkg:pypi/jupyterhub@1.3.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-jruk-8qvr-d3hh" }, { "vulnerability": "VCID-v61t-4jv9-j3bv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub@1.3.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/24849?format=api", "purl": "pkg:pypi/jupyterhub@1.4.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-jruk-8qvr-d3hh" }, { "vulnerability": "VCID-v61t-4jv9-j3bv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub@1.4.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/24850?format=api", "purl": "pkg:pypi/jupyterhub@1.4.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-jruk-8qvr-d3hh" }, { "vulnerability": "VCID-v61t-4jv9-j3bv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub@1.4.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/24851?format=api", "purl": "pkg:pypi/jupyterhub@1.4.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-jruk-8qvr-d3hh" }, { "vulnerability": "VCID-v61t-4jv9-j3bv" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub@1.4.2" } ], "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-41247", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00212", "scoring_system": "epss", "scoring_elements": "0.43771", "published_at": "2026-06-04T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-41247" }, { "reference_url": "https://github.com/jupyterhub/jupyterhub", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N" }, { "value": "5.1", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/jupyterhub/jupyterhub" }, { "reference_url": "https://github.com/jupyterhub/jupyterhub/commit/5ac9e7f73a6e1020ffddc40321fc53336829fe27", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N" }, { "value": "5.1", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/jupyterhub/jupyterhub/commit/5ac9e7f73a6e1020ffddc40321fc53336829fe27" }, { "reference_url": "https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-cw7p-q79f-m2v7", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N" }, { "value": "5.1", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-cw7p-q79f-m2v7" }, { "reference_url": "https://github.com/pypa/advisory-database/tree/main/vulns/jupyterhub/PYSEC-2021-386.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N" }, { "value": "5.1", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/pypa/advisory-database/tree/main/vulns/jupyterhub/PYSEC-2021-386.yaml" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-41247", "reference_id": "CVE-2021-41247", "reference_type": "", "scores": [ { "value": "3.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N" }, { "value": "5.1", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-41247" }, { "reference_url": "https://github.com/advisories/GHSA-cw7p-q79f-m2v7", "reference_id": "GHSA-cw7p-q79f-m2v7", "reference_type": "", "scores": [], "url": "https://github.com/advisories/GHSA-cw7p-q79f-m2v7" } ], "weaknesses": [ { "cwe_id": 613, "name": "Insufficient Session Expiration", "description": "According to WASC, Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization." }, { "cwe_id": 937, "name": "OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013." }, { "cwe_id": 1035, "name": "OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017." } ], "exploits": [], "severity_range_score": "3.5 - 6.9", "exploitability": "0.5", "weighted_severity": "6.2", "risk_score": 3.1, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-v61t-4jv9-j3bv" }