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Fencer Vulns
high 8.8

CVE-2026-33414 json

PowerShell Command Injection in Podman HyperV Machine

published 2026-04-14 6 mo ago modified 2026-09-10 1 mo ago also EUVD-2026-22800 , GHSA-hc8w-h2mf-hp59 , GO-2026-5421

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits
0
none known

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.

Patch / fix

  • go github.com/containers/podman/v5 5.8.2
  • Red Hat Red Hat Hardened Images 5.8.2-1.hum1
  • podman Debian 14 5.8.2+ds1-1

debian advisories DEBIAN-CVE-2026-33414

  • podman hummingbird 1 5.8.2-1.hum1
  • podmansh hummingbird 1 5.8.2-1.hum1
  • podman-tests hummingbird 1 5.8.2-1.hum1
  • podman-docker hummingbird 1 5.8.2-1.hum1
  • podman-remote hummingbird 1 5.8.2-1.hum1
  • podman-machine hummingbird 1 5.8.2-1.hum1

red hat advisories RHSA-2026:8211

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
  • podman openSUSE Tumbleweed 5.8.2-1.1

opensuse advisories openSUSE-SU-2026:21483-1openSUSE-SU-2026:10706-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-33414 updated cvss 8.8

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

  • Red Hat Hardened Images podman 5.8.2-1.hum1, podmansh 5.8.2-1.hum1, podman-tests 5.8.2-1.hum1, podman-docker 5.8.2-1.hum1, podman-remote 5.8.2-1.hum1, podman-machine 5.8.2-1.hum1
    fixed: vendor fix RHSA-2026:8211
  • Red Hat Enterprise Linux 8 podman, podman-tests, podman-docker, podman-remote, podman-gvproxy, podman-plugins, +2 more Red Hat Enterprise Linux 9 podman, podman-tests, podman-docker, podman-remote, podman-gvproxy, podman-plugins, +1 more Red Hat Enterprise Linux 10 podman Red Hat OpenShift Container Platform 4 rhcos, podman, podman-tests, podman-docker, podman-remote, podman-gvproxy, +3 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
6 mo ago

Exploit prediction

0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 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
CISA ADP 3.1 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GitHub 3.1 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CNA 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/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
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/containers/podman/v4
>=4.8.0, <=4.9.5
>=4.8.0
 no fix listed
go github.com/containers/podman/v5
<5.8.2
5.8.2
go github.com/containers/podman
all versions
 no fix listed
go github.com/containers/podman/v2
all versions
 no fix listed
go github.com/containers/podman/v3
all versions
 no fix listed

Affected products

  • containers podman
  • Red Hat Red Hat Hardened Images
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat OpenShift Container Platform 4

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.