{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.8.4"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "CliInvoke.Specializations"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.2.0"
            },
            {
              "fixed": "2.8.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.9.3"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "CliInvoke.Specializations"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.9.0"
            },
            {
              "fixed": "2.9.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.10.4"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "CliInvoke.Specializations"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.10.0"
            },
            {
              "fixed": "2.10.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 3.0.0-alpha.4"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "CliInvoke.Specializations"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0-alpha.1"
            },
            {
              "fixed": "3.0.0-beta.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 3.0.0-alpha.10"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "CliInvoke.Specializations"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0-alpha.8"
            },
            {
              "fixed": "3.0.0-beta.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.6.1.1"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "AlastairLundy.CliInvoke.Specializations"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0.0-rc.1"
            },
            {
              "fixed": "2.0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-100368"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-25T21:41:48Z",
    "nvd_published_at": "2026-09-25T20:17:05Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nAn OS command injection vulnerability exists in the PowerShell and Cmd shell wrappers provided by the `CliInvoke.Specializations` package (the `PowershellProcessInvoker`/`CmdProcessInvoker` invokers, and the `UsePowerShell`/`UseCmd` middleware in v3 pre-release versions).\n\nThe wrappers re-run a caller-supplied target and arguments inside a shell command (`pwsh -Command ...` / `cmd /c ...`). In affected versions the wrapped command was delivered to the operating system as a single `ProcessStartInfo.Arguments` string. The OS command-line parser re-tokenizes that string before the shell parses it, so a double quote (`\"`) in the target or arguments breaks OS-level quoting and lets the wrapped shell reassemble a second, unintended command. \n\nAn attacker could exploit this to execute arbitrary commands with the privileges of the host process.\n\n### Patches\nThe Specializations Packages now deliver the command via `ProcessStartInfo.ArgumentList` (natively where supported, and polyfilled in older TFMs), so that the operating system passes argv verbatim and only the shell parses the command once. \n\nUpgrade to:\n- **2.8.5** (2.8.x line)\n- **2.9.4** (2.9.x line)\n- **2.10.5** (2.10.x line)\n- **3.0.0-beta.1** (3.x pre-release line)\n\n### Workarounds\nNo complete workaround is available. Until upgraded:\n\n- Reject or strip `\"` from any target path or argument passed to the PowerShell/Cmd wrappers. On 2.2.0 \u2013 2.9.2 and 3.0.0-alpha.1 \u2013 alpha.4, also reject shell metacharacters (`;`, `|`, `\u0026`, `$`, backtick, parentheses).\n- Alternatively, bypass the wrappers for untrusted input and invoke the target process directly so that no second shell parse of the data occurs.",
  "id": "GHSA-wrvw-254r-wpmv",
  "modified": "2026-09-25T21:41:48Z",
  "published": "2026-09-25T21:41:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/alastairlundy/CliInvoke/security/advisories/GHSA-wrvw-254r-wpmv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100368"
    },
    {
      "type": "WEB",
      "url": "https://github.com/alastairlundy/CliInvoke/commit/1e98582f02eb43e345e5b97b8dd6ff9443806685"
    },
    {
      "type": "WEB",
      "url": "https://github.com/alastairlundy/CliInvoke/commit/2077e5239850e83dc9cc67ae6036dcd4e68a1876"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/alastairlundy/CliInvoke"
    },
    {
      "type": "WEB",
      "url": "https://github.com/alastairlundy/CliInvoke/releases/tag/2.10.5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/alastairlundy/CliInvoke/releases/tag/3.0.0-beta.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "CliInvoke.Specializations has command injection in PowerShell and Cmd shell wrappers"
}