CVE-2026-110111
Xen Orchestra before 6.9.0 Privilege Escalation via Prototype Pollution in vm.importFromEsxi
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
Xen Orchestra before 6.9.0 contains an improper access control vulnerability that allows any authenticated user to become global administrator by abusing the unprotected vm.importFromEsxi and vm.importMultipleFromEsxi methods. Attackers can point xo-server at a malicious ESXi host serving a crafted .vmx file with __proto__.permission set, polluting Object.prototype so permission-less accounts inherit admin rights and enabling remote code execution.
| CWE | CWE-1321 |
| Vendor | vatesfr |
| Product | xen-orchestra |
| Published | Oct 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
vatesfr / xen-orchestra
0 < 6.9.0
References
Credits
Allan Victor