CVE-2026-33414

Summary

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.

Affected Software

Weaknesses

• CWE-78: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: total

podman: github.com/containers/podman: Podman: Arbitrary code execution via command injection in HyperV backend

Additional References

• https://access.redhat.com/security/cve/CVE-2026-33414
• https://bugzilla.redhat.com/show_bug.cgi?id=2458522
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33414.json
• https://access.redhat.com/errata/RHSA-2026:8211

References

• https://github.com/containers/podman/security/advisories/GHSA-hc8w-h2mf-hp59
• https://github.com/containers/podman/commit/571c842bd357ee626019ea97d030fb772fc654ed

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