{"schema":"threatline.record/2","record":{"id":"CVE-2026-100368","aliases":["GHSA-wrvw-254r-wpmv"],"summary":"CliInvoke.Specializations has command injection in PowerShell and Cmd shell wrappers","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 – 2.9.2 and 3.0.0-alpha.1 – alpha.4, also reject shell metacharacters (`;`, `|`, `&`, `$`, 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.","categories":["Libraries & packages"],"product":"CliInvoke.Specializations","vendor":"alastairlundy","ecosystem":"nuget","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-wrvw-254r-wpmv","source_modified_at":"2026-09-25T21:41:49Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"nuget","name":"CliInvoke.Specializations"},"range":">= 2.2.0, <= 2.8.4"},{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-wrvw-254r-wpmv","source_modified_at":"2026-09-25T21:41:49Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"nuget","name":"CliInvoke.Specializations"},"range":">= 2.9.0, <= 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