Vates Xen Orchestra up to 6.8.x ESXi Import vm.importFromEsxi/vm.importMultipleFromEsxi __proto__ access control

Summaryinfo

A vulnerability identified as very critical has been detected in Vates Xen Orchestra up to 6.8.x. This issue affects the function vm.importFromEsxi/vm.importMultipleFromEsxi of the component ESXi Import. This manipulation of the argument __proto__ causes access control. This vulnerability is tracked as CVE-2026-110111. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Vates Xen Orchestra up to 6.8.x. It has been declared as very critical. Affected by this vulnerability is the function vm.importFromEsxi/vm.importMultipleFromEsxi of the component ESXi Import. The manipulation of the argument __proto__ with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-110111 since 10/13/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/13/2026). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 6.9.0 eliminates this vulnerability.

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Productinfo

Type

• Virtualization Software

Vendor

• Vates

Name

• Xen Orchestra

Version

• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6
• 6.7
• 6.8

License

• open-source

CPE 2.3info

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CPE 2.2info

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