Vulnerabilities in pkg:nuget/AlastairLundy.CliInvoke
PACKAGECVE-2026-100369 is a HIGH (CVSS 8.4) argument injection vulnerability (CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')) affecting CliInvoke libraries in the NuGet ecosystem. The issue involves argument injection in extensibility runner factory. Remediation is available by upgrading affected packages to version 2.8.5, 2.9.4, 2.10.5, 3.0.0-beta.2, 2.0.2.
pkg:nuget/AlastairLundy.CliInvoke
Vulnerability advisories affecting package pkg:nuget/AlastairLundy.CliInvoke. Select an advisory below to view technical details or fixes.
| Advisory ID | CVE / NVD | Severity | Summary |
|---|---|---|---|
| GHSA-j73w-8hfr-4gc9 | CVE-2026-100369 | HIGH | CliInvoke: Argument Injection in Extensibility Runner Factory |
CVE-2026-100369 at a Glance
Security Impact
CVSS: 8.4
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
How to Fix CVE-2026-100369
To remediate this vulnerability, upgrade all affected CliInvoke dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade CliInvoke to 2.8.5
Upgrade CliInvoke to 2.9.4
Upgrade CliInvoke to 2.10.5
Upgrade CliInvoke to 3.0.0-beta.2
Upgrade AlastairLundy.CliInvoke to 2.0.2
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for CliInvoke
How to Check if You Are Affected
To determine whether your application is affected by CVE-2026-100369, inspect your project dependencies for CliInvoke:
inspect dependencies for CliInvoke
Analyze the terminal output to locate any version of CliInvoke in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.8.5), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection'), where the product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string. In CliInvoke, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-100369 Affected CliInvoke Versions
5 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
CliInvoke
|
NuGet |
≥ 2.0.0
< 2.8.5
|
2.8.5
|
|
CliInvoke
|
NuGet |
≥ 2.9.0
< 2.9.4
|
2.9.4
|
|
CliInvoke
|
NuGet |
≥ 2.10.0
< 2.10.5
|
2.10.5
|
|
CliInvoke
|
NuGet |
≥ 3.0.0-alpha.1
< 3.0.0-beta.2
|
3.0.0-beta.2
|
|
AlastairLundy.CliInvoke
|
NuGet |
≥ 2.0.0-alpha.1
< 2.0.2
|
2.0.2
|
References
Frequently Asked Questions
What is CVE-2026-100369?
Which CliInvoke versions are affected?
What version fixes CVE-2026-100369?
Is CliInvoke affected?
Is AlastairLundy.CliInvoke affected?
What is the CVSS score of CVE-2026-100369?
What CWE is associated with CVE-2026-100369?
How can I check NuGet dependencies for CVE-2026-100369?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-j73w-8hfr-4gc9",
"modified" : "2026-09-25T21:41:36Z",
"published" : "2026-09-25T21:41:36Z",
"aliases" : [ "CVE-2026-100369" ],
"summary" : "CliInvoke: Argument Injection in Extensibility Runner Factory",
"details" : "### Impact\nAn argument-injection vulnerability exists in the `CliInvoke`\npackage's runner factory: `RunnerProcessFactory` on the 2.x line and\n`RunnerConfigurationFactory` on the 3.x line.\n\nThe factory joins the runner arguments, the caller's target, and the\ncaller's arguments into a single `ProcessStartInfo.Arguments` string and\nhands it to the OS. The OS command-line parser re-tokenizes the string\nbefore the runner sees it. A double quote (`\"`) in the target or in any\nargument closes the OS-level quoted region and lets the next character\nenter argv as a separate element.\n\n### Patches\nUpgrade to:\n\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.2** (3.x pre-release line)\n\n### Workarounds\nNo complete workaround is available. Until you can upgrade:\n\n- Strip `\"` from any target or argument before passing it to the\n factory. On shell runners, also strip `;`, `|`, `&`, `$`, backtick,\n and parentheses.\n- Or bypass the factory entirely and build the `ProcessConfiguration`\n directly. Set `ArgumentList` explicitly to the argv you want the\n runner to receive.\n\nThese are partial mitigations. They shift the quoting problem to your\ncode.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "NuGet",
"name" : "CliInvoke"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.0.0"
}, {
"fixed" : "2.8.5"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 2.8.4"
}
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "CliInvoke"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.9.0"
}, {
"fixed" : "2.9.4"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 2.9.3"
}
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "CliInvoke"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.10.0"
}, {
"fixed" : "2.10.5"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 2.10.4"
}
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "CliInvoke"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.0.0-alpha.1"
}, {
"fixed" : "3.0.0-beta.2"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 3.0.0-beta.1"
}
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "AlastairLundy.CliInvoke"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.0.0-alpha.1"
}, {
"fixed" : "2.0.2"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 2.0.0"
}
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/alastairlundy/CliInvoke/security/advisories/GHSA-j73w-8hfr-4gc9"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-100369"
}, {
"type" : "WEB",
"url" : "https://github.com/alastairlundy/CliInvoke/commit/1e98582f02eb43e345e5b97b8dd6ff9443806685"
}, {
"type" : "WEB",
"url" : "https://github.com/alastairlundy/CliInvoke/commit/fac321c7cc9cf4372919842701829ca2be5e7307"
}, {
"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.2"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-88" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-09-25T21:41:36Z",
"nvd_published_at" : "2026-09-25T21:17:21Z"
}
}