PT-2026-32953 · Go+1 · Github.Com/Containers/Podman/V4+2

Koreasecurity

·

Published

2026-04-14

·

Updated

2026-04-14

·

CVE-2026-33414

CVSS v4.0

4.0

Medium

AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U

Summary

A command injection vulnerability exists in Podman's HyperV machine backend. The VM image path is inserted into a PowerShell double-quoted string without sanitization, allowing $() subexpression injection.

Affected Code

File: pkg/machine/hyperv/stubber.go:647
resize := exec.Command("powershell", []string{
  "-command",
  fmt.Sprintf("Resize-VHD "%s" %d", imagePath.GetPath(), newSize.ToBytes()),
}...)

Root Cause

PowerShell evaluates $() subexpressions inside double-quoted strings before executing the outer command. The fmt.Sprintf call places the user-controlled image path directly into double quotes without escaping or sanitization.

Impact

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 the Windows host. On typical Windows installations, this means SYSTEM-level code execution.

Patch

https://github.com/containers/podman/commit/571c842bd357ee626019ea97d030fb772fc654ed
The affected code is only used on Windows, all other operating systems are not affected by this and can thus ignore the CVE patch.

Credit

We like to thank Sang-Hoon Choi (@KoreaSecurity) for reporting this issue to us.

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2026-33414
GHSA-HC8W-H2MF-HP59

Affected Products

Github.Com/Containers/Podman/V4
Github.Com/Containers/Podman/V5
Podman