CVE-2026-110111Xen Orchestra before 6.9.0 Privilege Escalation via Prototype Pollution in vm.importFromEsxi
Updated under an hour ago ()
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It affects vatesfr xen-orchestra. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.62%, higher than 48% of scored CVEs.
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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.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-1321
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.62% (percentile 48)
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 13, 2026
- First seen by InfoSec Signals
- Oct 13, 2026
Affected products
vatesfr xen-orchestra vatesfr:xen_orchestra (from the name) | before 6.9.0; 6.9.0 not affected | CNA record |
References
- https://github.com/vatesfr/xen-orchestra/security/advisories/GHSA-mc4m-hc98-rhmvvendor-advisory
- https://www.vulncheck.com/advisories/xen-orchestra-before-6.9.0-privilege-escalation-via-prototype-pollution-in-vm-importfromesxithird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.