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CVE-2026-84731— Pre-Authentication Admin Bypass and Remote Code Execution in Nutanix Prism Gateway inside AOS

Quick assessment

Affected
Nutanix Acropolis Operating System (AOS)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

未经授权的攻击者可通过构造一个特殊的内部管理 HTTP 请求头，绕过 Nutanix Prism Element 的身份验证机制，从而获得对管理员 API 端点的完全访问权限。该漏洞源于应用程序身份验证过滤器中的配置错误。 因此，服务器会响应一个包含有效 JSESSIONID 的 Set-Cookie 头。该会话 Cookie 解码后为一个 JSON Web Token（JWT），具备集群的最高管理员权限。成功利用此漏洞后，攻击者可在集群中的所有控制器虚拟机（CVM）上执行具有 root 权限的命令，从而导致整个集

CVSS 9.8 · Critical

Affected Version Matrix 3

VendorProduct Version RangeStatus
Nutanix Acropolis Operating System (AOS) < 7.3.1.18 affected
7.5< 7.5.2 affected
7.6< 7.6.0.8 affected
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I. Basic Information for CVE-2026-84731

Vulnerability Information
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Vulnerability Title
Pre-Authentication Admin Bypass and Remote Code Execution in Nutanix Prism Gateway inside AOS
Source: CVE Program / CVE List V5
Vulnerability 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. Consequently, 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Nutanix Acropolis Operating System (AOS) 0 ~ 7.3.1.18 -

II. Public POCs for CVE-2026-84731

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III. Intelligence Information for CVE-2026-84731

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Vendor Pages for CVE-2026-84731 (1)

Other References for CVE-2026-84731 (2)

IV. Related Vulnerabilities

Same vendor: Nutanix
Same weakness: CWE-306

V. Comments for CVE-2026-84731

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