{"schema_version":"1","data":[{"id":12812,"advisory_id":"adae6cb4-2163-4d3b-b266-476fc189a1ac","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-67338","source_published_at":"2026-08-01T12:22:17.437+00:00","published_at":"2026-10-25T00:13:58.813042+00:00","extraction_method":"structured","technologies":["core-cve","jupyterlab"],"cve_ids":["CVE-2026-67338"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"JupyterLab before 4.5.9 Stored XSS via Extension Manager","summary":"JupyterLab before 4.5.9 contains a stored cross-site scripting vulnerability in the Extension Manager that fails to validate URI protocols in package metadata URLs. Attackers can publish malicious PyPI packages with javascript: URLs in project metadata that execute arbitrary JavaScript in the JupyterLab origin when users click the extension name.","evidence":"cve:CVE-2026-67338","products":[{"name":{"value":"jupyterlab","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"medium","structured":{"id":"CVE-2026-67338","aliases":["CVE-2026-67338"],"metrics":[{"format":"CVSS","cvssV4_0":{"Safety":"NOT_DEFINED","version":"4.0","Recovery":"NOT_DEFINED","baseScore":5.1,"Automatable":"NOT_DEFINED","attackVector":"NETWORK","baseSeverity":"MEDIUM","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","exploitMaturity":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","userInteraction":"PASSIVE","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","subIntegrityImpact":"LOW","vulnIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"}},{"format":"CVSS","cvssV3_1":{"scope":"CHANGED","version":"3.1","baseScore":6.1,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}}],"affected":[{"vendor":"jupyterlab","product":"jupyterlab","versions":[{"status":"affected","version":"0","lessThan":"4.5.9","versionType":"semver"},{"status":"unaffected","version":"4.5.9","versionType":"semver"}],"packageURL":"pkg:pypi/jupyterlab","defaultStatus":"unaffected"}],"modified":"2026-10-08T15:24:13.033Z","provider":"cve","references":["https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-vmhf-c436-hxj4","https://github.com/jupyterlab/jupyterlab/commit/4e61e07d0a91145b53fbf96ac74b0387f6bc51f6","https://github.com/jupyterlab/jupyterlab/commit/d5d961f6e10a6442dddbf94d9a976b3897055a12","https://www.vulncheck.com/advisories/jupyterlab-before-stored-xss-via-extension-manager"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-67338","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-08-03T19:36:31.254675Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-03T19:36:40.296Z"}}],"cna":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-10-08T15:24:13.033Z"}}},"related_cves":[{"value":"CVE-2026-67338","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}}],"next_after":12812,"next_before":12812}