OS Command Injection in Podman - CVE-2026-33414
Published: April 14, 2026 / Updated: June 18, 2026
Vulnerability identifier: #VU125986
CSH Severity: Medium
CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-33414
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary commands on the Windows host.
The vulnerability exists due to command injection in pkg/machine/hyperv/stubber.go when resizing a HyperV virtual disk using a user-controlled VM image path in a PowerShell double-quoted string. A remote attacker can supply a crafted machine name or image directory containing a PowerShell subexpression to execute arbitrary commands on the Windows host.
The issue affects only the Windows-specific HyperV machine backend.
Affected software
Podman
How to mitigate CVE-2026-33414
Install security update from vendor's website.
Podman - update to 5.8.2