AlastairLundy CliInvoke/AlastairLundy.CliInvoke up to 2.0.0 Process Factory RunnerProcessFactory/RunnerConfigurationFactory os command injection

Summaryinfo

A vulnerability described as problematic has been identified in AlastairLundy CliInvoke and AlastairLundy.CliInvoke up to 2.8.4/2.9.3/2.10.4/3.0.0-beta.1/2.0.0. Affected is the function RunnerProcessFactory/RunnerConfigurationFactory of the component Process Factory. Executing a manipulation can lead to os command injection. The identification of this vulnerability is CVE-2026-100369. The attack can only be executed locally. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in AlastairLundy CliInvoke and AlastairLundy.CliInvoke up to 2.8.4/2.9.3/2.10.4/3.0.0-beta.1/2.0.0. This vulnerability affects the function RunnerProcessFactory/RunnerConfigurationFactory of the component Process Factory. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

CliInvoke and its formerly named `AlastairLundy.CliInvoke` package are .NET libraries for invoking command-line programs and wrapping executable processes. `CliInvoke` versions 2.0.0 through 2.8.4, 2.9.0 through 2.9.3, 2.10.0 through 2.10.4, and 3.0.0-alpha.1 through 3.0.0-beta.1, as well as `AlastairLundy.CliInvoke` versions 2.0.0-alpha.1 through 2.0.0, contain an argument-injection vulnerability in `RunnerProcessFactory` on the 2.x line and `RunnerConfigurationFactory` on the 3.x line. These factories combine runner arguments, a caller-controlled target, and caller-controlled arguments into one `ProcessStartInfo.Arguments` string, allowing a double quote in the target or an argument to terminate an operating-system-level quoted region and inject unintended elements into the runner’s argument vector, potentially resulting in arbitrary command execution when a shell runner is used. The vulnerability is patched in `CliInvoke` versions 2.8.5, 2.9.4, 2.10.5, and 3.0.0-beta.2, and in `AlastairLundy.CliInvoke` version 2.0.2. No complete workaround is available; users unable to upgrade can partially mitigate the issue by removing double quotes from targets and arguments, additionally removing shell metacharacters when using shell runners, or bypassing the vulnerable factory and constructing a `ProcessConfiguration` with an explicit `ArgumentList`.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-100369 since 09/25/2026. The exploitation appears to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading to version 2.8.5, 2.9.4, 2.10.5, 3.0.0-beta.2 or 2.0.2 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• AlastairLundy

Name

• AlastairLundy.CliInvoke
• CliInvoke

Version

• 2.0
• 2.8.0
• 2.8.1
• 2.8.2
• 2.8.3
• 2.8.4
• 2.9.0
• 2.9.1
• 2.9.2
• 2.9.3
• 2.10.0
• 2.10.1
• 2.10.2
• 2.10.3
• 2.10.4
• 3.0.0-beta.0
• 3.0.0-beta.1

Website

• Product: https://github.com/alastairlundy/CliInvoke/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion