CVE-2026-33414: Github.com/containers/podman/v4 PowerShell Command Injection Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-hc8w-h2mf-hp59",
  "modified" : "2026-04-27T16:31:35Z",
  "published" : "2026-04-14T22:30:24Z",
  "aliases" : [ "CVE-2026-33414" ],
  "summary" : "PowerShell Command Injection in Podman HyperV Machine",
  "details" : "## Summary\n\nA 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 `$()` subexpression injection.\n\n## Affected Code\n\n**File**: `pkg/machine/hyperv/stubber.go:647`\n\n```go\nresize := exec.Command(\"powershell\", []string{\n    \"-command\",\n    fmt.Sprintf(\"Resize-VHD \\\"%s\\\" %d\", imagePath.GetPath(), newSize.ToBytes()),\n}...)\n```\n\n\n\n## Root Cause\n\nPowerShell evaluates `$()` 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.\n\n## Impact\n\nAn 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.\n\n\n## Patch\n\nhttps://github.com/containers/podman/commit/571c842bd357ee626019ea97d030fb772fc654ed\n\nThe affected code is only used on Windows, all other operating systems are not affected by this and can thus ignore the CVE patch.\n\n## Credit\n\nWe like to thank Sang-Hoon Choi (@KoreaSecurity) for reporting this issue to us.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/containers/podman/v4"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.8.0"
      }, {
        "last_affected" : "4.9.5"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/containers/podman/v5"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.8.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 5.8.1"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/containers/podman/security/advisories/GHSA-hc8w-h2mf-hp59"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-33414"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/containers/podman/commit/571c842bd357ee626019ea97d030fb772fc654ed"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/containers/podman"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-14T22:30:24Z",
    "nvd_published_at" : "2026-04-14T23:16:27Z"
  }
}