Xen Orchestra before 6.9.0 Privilege Escalation via Prototype Pollution in vm.importFromEsxi
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.
CVE-2026-110111
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-110111
xen-orchestra
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/vatesfr/xen-orchestra",
"vendor": "vatesfr",
"product": "xen-orchestra",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "6.9.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.9.0",
"versionType": "semver"
}
],
"packageURL": "pkg:github/vatesfr/xen-orchestra",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-110111
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #20685 · Revision 1
- Added to Heist Feed
- Publisher date