{"id":"CVE-2026-84731","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-84731","generatedAt":"2026-10-28T10:37:03.054Z","title":"An unauthenticated remote attacker can bypass authentication and gain full access to administrative API endpoints in Nutanix Prism Element by including a crafted internal management HTTP header.","description":"An unauthenticated remote attacker can bypass authentication and gain full access to administrative API endpoints in Nutanix Prism Element by including a crafted internal management HTTP header. The vulnerability is caused by a misconfiguration in the application's authentication filters.\n\n\n\nConsequently, the server responds with a Set-Cookie header containing a valid JSESSIONID. This session cookie decodes to a JSON Web Token (JWT) granting maximum cluster administrative privileges. Successful exploitation allows the attacker to execute root-level commands on all Controller VMs (CVMs) in the cluster, leading to complete cluster destruction and unauthorized access to VM memory and virtual disks.","published":"2026-10-15T18:17:30.000Z","lastModified":"2026-10-16T19:56:00.000Z","status":"Awaiting Analysis","sourceIdentifier":"2ffdacf6-8681-47df-b023-4f11abd61c1d","cvss":{"version":"4.0","score":9.3,"severity":"CRITICAL","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-290","CWE-302","CWE-306"],"affected":[],"epss":{"score":0.01283,"percentile":0.69942,"date":"2026-10-27","history":[{"date":"2026-10-16","score":0.01283,"percentile":0.69603}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.28%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-15T18:17:30.000Z","detail":{"score":"9.3","severity":"CRITICAL","publishedAt":"2026-10-15T18:17:29.960Z"},"summary":"New CVE, critical severity (CVSS 9.3)."}],"references":[{"url":"https://download.nutanix.com/alerts/Security_Advisory_0058.pdf","source":"2ffdacf6-8681-47df-b023-4f11abd61c1d"},{"url":"https://portal.nutanix.com/page/documents/list?type=software&filterKey=software&filterVal=AOS","source":"2ffdacf6-8681-47df-b023-4f11abd61c1d"},{"url":"https://www.nutanix.com/support","source":"2ffdacf6-8681-47df-b023-4f11abd61c1d"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-84731","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}