CVE-2026-33414
PowerShell Command Injection in Podman HyperV Machine
- State
- Published
- Severity
- 4.0 Medium
- Published
- Apr 14, 2026
- Updated
- Jul 15, 2026
- Reserved
- Mar 19, 2026
Description
Podman is a tool for managing OCI containers and pods. Versions 4.8.0 through 5.8.1 contain a command injection vulnerability in the HyperV machine backend in pkg/machine/hyperv/stubber.go, where the VM image path is inserted into a PowerShell double-quoted string without sanitization, allowing $() subexpression injection. Because PowerShell evaluates subexpressions inside double-quoted strings before executing the outer command, an attacker who can control the VM image path through a crafted machine name or image directory can execute arbitrary PowerShell commands with the privileges of the Podman process. On typical Windows installations this means SYSTEM-level code execution, and only Windows is affected as the code is exclusive to the HyperV backend. This issue has been patched in version 5.8.2.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.0 Medium | CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U | GitHub_M |
| 3.1 | 8.8 High | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
podmancontainers |
|
References
- https://github.com/containers/podman/security/advisories/GHSA-hc8w-h2mf-hp59
- https://github.com/containers/podman/commit/571c842bd357ee626019ea97d030fb772fc654ed
- https://access.redhat.com/security/cve/CVE-2026-33414vdb-entry
- RHBZ#2458522issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33414.json
- https://access.redhat.com/errata/RHSA-2026:8211vendor-advisory
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