CVE-2026-50112
- Source
- https://cve.org/CVERecord?id=CVE-2026-50112
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50112.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-50112
- Published
- 2026-08-21T08:29:41Z
- Modified
- 2026-08-28T11:47:29Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- Apache CloudStack: RCE and SSRF in direct download, metalink and NFS templates
- Details
-
SSRF via Metalink Mirror URL Resolution:
An authenticated tenant can register a template pointing to an attacker-controlled metalink file containing internal targets. The Secondary Storage VM will retrieve the data and persist it as a template file, which can later be downloaded through normal APIs.
RCE on KVM hypervisor via NFS, Metalink files with/without Direct Downloads:
An authenticated CloudStack tenant holding the default User role can execute arbitrary shell commands as root on the KVM hypervisor host that runs other tenants' VMs. This is cross-tenant root on the underlying compute, reachable via the public CloudStack API.
When a User registers a VM template with directDownload=true and a URL pointing to a .metalink file, the management server fetches the metalink XML and dispatches download to the KVM agent. Inner URLs inside the metalink XML are never re-validated against the scheme allowlist.
These issues affect Apache CloudStack: from 4.14.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.
Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.
- Database specific
{ "cna_assigner": "apache", "cwe_ids": [ "CWE-78", "CWE-918" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50112.json", "unresolved_ranges": [ { "extracted_events": [ { "introduced": "4.14.0.0" }, { "last_affected": "4.20.3.0" }, { "introduced": "4.21.0.0" }, { "last_affected": "4.22.1.0" } ], "source": "AFFECTED_FIELD" }, { "extracted_events": [ { "introduced": "4.14.0.0" }, { "fixed": "4.20.3.0" }, { "introduced": "4.21.0.0" }, { "fixed": "4.22.1.0" } ], "source": "DESCRIPTION" } ] }- References