CVE-2026-86478

{"id": "CVE-2026-86478", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-86478", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-08T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@jetbrains.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "cve@jetbrains.com", "affectedData": [{"vendor": "JetBrains", "product": "YouTrack", "versions": [{"status": "affected", "version": "0", "lessThan": "2025.3.161254, \n2026.1.14042", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-07T17:17:25.920", "references": [{"url": "https://www.jetbrains.com/privacy-security/issues-fixed/", "source": "cve@jetbrains.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "cve@jetbrains.com", "description": [{"lang": "en", "value": "CWE-290"}]}], "descriptions": [{"lang": "en", "value": "In JetBrains YouTrack before 2025.3.161254, \n2026.1.14042 improper authentication in YouTrack Helpdesk allowed unauthenticated account takeover via a self-asserted email address"}], "lastModified": "2026-09-09T05:18:19.617", "sourceIdentifier": "cve@jetbrains.com"}