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CVE-2026-100369
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.
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The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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