CVE Catalog

CVE-2026-100368

HighCVSS 8.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.58%

46th percentile - higher than 46% of all known CVEs

Summary

The .NET library CliInvoke.Specializations (and AlastairLundy.CliInvoke.Specializations) contains an OS command injection vulnerability in its PowerShell and Cmd wrappers. The wrappers pass a caller-controlled target and arguments to `pwsh -Command` or `cmd /c` using a single `ProcessStartInfo.Arguments` string, allowing a double quote in untrusted input to break OS-level quoting and execute an additional command with the host process's privileges.

Risk Assessment

An attacker can execute arbitrary commands with the privileges of the host process, potentially leading to system compromise or data theft.

Recommendation

Upgrade CliInvoke.Specializations to version 2.8.5, 2.9.4, 2.10.5, or 3.0.0-beta.1, and AlastairLundy.CliInvoke.Specializations to 2.0.2. If unable to upgrade, reject or remove double quotes from target paths and arguments, and additionally reject shell metacharacters in older versions.

Related vulnerabilities

Original NVD description (English source)

CliInvoke is a .NET library for invoking command-line programs, and its `CliInvoke.Specializations` packages provide specialized wrappers for shells such as PowerShell and Windows Command Prompt. `CliInvoke.Specializations` versions 2.2.0 through 2.8.4, 2.9.0 through 2.9.3, 2.10.0 through 2.10.4, 3.0.0-alpha.1 through 3.0.0-alpha.4, and 3.0.0-alpha.8 through 3.0.0-alpha.10, as well as `AlastairLundy.CliInvoke.Specializations` versions 1.0.0-rc.1 through 1.6.1.1, contain an OS command injection vulnerability in their PowerShell and Cmd wrappers. The wrappers pass a caller-controlled target and arguments to `pwsh -Command` or `cmd /c` using a single `ProcessStartInfo.Arguments` string, allowing a double quote in untrusted input to break operating-system-level quoting and cause the shell to execute an additional command with the host process's privileges. The vulnerability is patched in `CliInvoke.Specializations` versions 2.8.5, 2.9.4, 2.10.5, and 3.0.0-beta.1, and in `AlastairLundy.CliInvoke.Specializations` version 2.0.2. No complete workaround is available; users unable to upgrade should reject or remove double quotes from target paths and arguments, additionally reject shell metacharacters in versions 2.2.0 through 2.9.2 and 3.0.0-alpha.1 through 3.0.0-alpha.4, or bypass the PowerShell and Cmd wrappers and invoke target processes directly when handling untrusted input.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS