CVE-2026-84731
CRITICALEPSS 70th pctlDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
TridentStack Control tracks known vulnerabilities across your Windows, macOS, and Linux fleet and shows the fix as soon as one is published. See how it works
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Elevated risk: more likely to be exploited than 70% of all known CVEs.
References
Related Vulnerabilities
Other CWE-290 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-4358 | Critical | 9.8 | 97% | KEV | - |
| CVE-2022-24112 | Critical | 9.8 | 96% | KEV | Fix |
| CVE-2022-23131 | Critical | 9.1 | 96% | KEV | - |
| CVE-2026-104935 | High | 8.6 | 87% | KEV | Fix |
| CVE-2021-29441 | High | 8.6 | 83% | - | Fix |
| CVE-2019-1234 | High | 7.5 | 75% | - | - |
Common questions
How do I fix CVE-2026-84731?
No published fix for CVE-2026-84731 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-84731 being actively exploited?
Not that we know of. CVE-2026-84731 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.3% is the estimated probability that it will be exploited in the next 30 days. That is higher than 70% of all scored CVEs.
How severe is CVE-2026-84731?
CVE-2026-84731 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
Embed a live status badge for CVE-2026-84731
Markdown
[](https://tridentstack.com/cve/CVE-2026-84731)HTML
<a href="https://tridentstack.com/cve/CVE-2026-84731"><img src="https://tridentstack.com/cve/badge/CVE-2026-84731.svg" alt="CVE-2026-84731"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-16.