{"id":"CVE-2026-110111","aliases":[],"cve":{"records":[{"id":"CVE-2026-110111","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-13T16:22:43.091Z","published":"2026-10-13T19:05:26.615Z","modified":"2026-10-26T18:13:58.740Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-13T19:05:26.615Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-26T18:13:58.740Z"}],"references":[{"url":"https://github.com/vatesfr/xen-orchestra/security/advisories/GHSA-mc4m-hc98-rhmv","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/xen-orchestra-before-6.9.0-privilege-escalation-via-prototype-pollution-in-vm-importfromesxi","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-1321","description":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:xen-orchestra:xen_orchestra_server:*:*:*:*:*:*:*:*","versionEndExcluding":"6.9.0"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-26T18:13:51.240533Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"Xen Orchestra before 6.9.0 Privilege Escalation via Prototype Pollution in vm.importFromEsxi","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"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execution.","score":7.7,"severity":"high","published":"2026-10-13T19:05:26.615Z","modified":"2026-10-26T18:13:58.740Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"vatesfr","name":"xen-orchestra","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"6.9.0","versionType":"semver"},{"version":"6.9.0","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:github/vatesfr/xen-orchestra","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-110111"}],"remediation":[],"references":["https://github.com/vatesfr/xen-orchestra/security/advisories/GHSA-mc4m-hc98-rhmv","https://www.vulncheck.com/advisories/xen-orchestra-before-6.9.0-privilege-escalation-via-prototype-pollution-in-vm-importfromesxi"],"sources":[{"name":"CVE","id":"CVE-2026-110111","modified":"2026-10-26T18:13:58.740Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-110111"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":7.7},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.5}],"sourceAffected":[],"observedAt":"2026-10-29T14:29:31.815Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T09:35:34.504Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"Xen Orchestra before 6.9.0 has a privilege escalation vulnerability via prototype pollution, allowing authenticated users to become global administrators. Attackers can exploit this by pointing the server at a malicious ESXi host with a crafted .vmx file. The impact is elevation of privileges.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:12:54.114Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-110111"}]}}