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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Datalore", "vendor": "JetBrains", "versions": [{"lessThan": "2026.4", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "cve@jetbrains.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In JetBrains Datalore before 2026.4 improper owner validation allowed reading another workspace's issues and runs notebook"}], "id": "CVE-2026-123291", "lastModified": "2026-11-06T11:17:07.730", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "cve@jetbrains.com", "type": "Secondary"}]}, "published": "2026-11-06T11:17:07.730", "references": [{"source": "cve@jetbrains.com", "url": "https://www.jetbrains.com/privacy-security/issues-fixed/"}], "sourceIdentifier": "cve@jetbrains.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-639"}], "source": "cve@jetbrains.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,2026.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Datalore", "source": "cna", "vendor": "JetBrains"}, "product": "datalore", "vendor": "jetbrains"}], "created": "2026-11-06T11:30:03.726242+00:00", "title": "Improper owner validation in JetBrains Datalore allows cross\u2011workspace data reading", "updated": "2026-11-06T13:45:03.632475+00:00", "vendors": ["jetbrains", "jetbrains$PRODUCT$datalore"]}