GHSA-hc8w-h2mf-hp59Published

PowerShell Command Injection in Podman HyperV Machine

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cve-program · CVE-2026-33414

Published

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.

Source published: 14 Apr 2026 22:42:19 UTC
Source modified: 15 Jul 2026 01:06:27 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · 4.0 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

euvd · EUVD-2026-22800

Published

Additional publisher context

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Apr 14, 2026, 10:42:19 PM

dateUpdated: Jul 15, 2026, 1:06:27 AM

3 related source bulletins · separate from aliases

RHSA-2026:8211: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

CVE-2025-9566 · CVE-2026-33414

WID-SEC-W-2026-1115: Podman HyperV Machine: Schwachstelle ermöglicht Ausführen von beliebigem Programmcode mit Administratorrechten

CVE-2026-33414

openSUSE-SU-2026:10706-1: podman-5.8.2-1.1 on GA media

CVE-2026-33414

Source published: Apr 14, 2026, 10:42:19 PM (timezone not stated)
Source modified: Jul 15, 2026, 1:06:27 AM (timezone not stated)
Saved here: 15 Nov 2026 10:03:16 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

EUVD CVSS 4.0 · 4.0 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

nvd · CVE-2026-33414

Published

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Modified

Weakness classifications: CWE-78 · CWE-94

Original publisher date fields

published: 2026-04-14T23:16:27.987

lastModified: 2026-07-24T23:10:00.563

2 source CPE criteria · context only

cpe:2.3:a:podman_project:podman:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 14 Apr 2026 23:16:27 UTC
Source modified: 24 Jul 2026 23:10:00 UTC
Saved here: 25 Oct 2026 08:17:18 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · [email protected] · Secondary · 4.0 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.1 · [email protected] · Primary · 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS 3.1 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c · Secondary · 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

osv · GHSA-hc8w-h2mf-hp59

Published

## 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 `$()` subexpression injection. ## Affected Code **File**: `pkg/machine/hyperv/stubber.go:647` ```go resize := exec.Command("powershell", []string{ "-command", fmt.Sprintf("Resize-VHD \"%s\" %d", imagePath.GetPath(), newSize.ToBytes()), }...) ``` ## Root Cause PowerShell evaluates `$()` 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.

Source published: 14 Apr 2026 22:30:24 UTC
Source modified: 10 Sep 2026 03:51:01 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V3 · CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS_V4 · 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

Publisher rating · MODERATE

osv · GO-2026-5421

Published

PowerShell Command Injection in Podman HyperV Machine in github.com/containers/podman

Source published: 25 Jun 2026 22:34:31 UTC
Source modified: 25 Jun 2026 23:01:12 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.