Vulnerability-Lookup

CVE-2026-100369 (GCVE-0-2026-100369)

Vulnerability from cvelistv5 – Published: 2026-09-25 20:26 – Updated: 2026-09-25 20:26

Title

CliInvoke: Argument Injection in Extensibility Runner Factory

Summary

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`.

Severity

8.4 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/alastairlundy/CliInvoke/securi…	x_refsource_CONFIRM

Impacted products

2 products

Vendor	Product	Version	CPE status
alastairlundy	CliInvoke	Affected: >= 2.0.0, <= 2.8.4 Affected: >= 2.9.0, <= 2.9.3 Affected: >= 2.10.0, <= 2.10.4 Affected: >= 3.0.0-alpha.1, <= 3.0.0-beta.1	guessed
alastairlundy	AlastairLundy.CliInvoke	Affected: >= 2.0.0-alpha.1, <= 2.0.0	guessed

Show details on NVD website

JSON

To clipboard

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          }
        ],
        "id": "CVE-2026-100369",
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}

FKIE_CVE-2026-100369

Vulnerability from fkie_nvd - Published: 2026-09-25 21:17 - Updated: 2026-09-25 21:17

Severity

8.4 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/alastairlundy/CliInvoke/security/advisories/GHSA-j73w-8hfr-4gc9

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "CliInvoke",
          "vendor": "alastairlundy",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.0.0, \u003c= 2.8.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.9.0, \u003c= 2.9.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.10.0, \u003c= 2.10.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.0.0-alpha.1, \u003c= 3.0.0-beta.1"
            }
          ]
        },
        {
          "product": "AlastairLundy.CliInvoke",
          "vendor": "alastairlundy",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.0.0-alpha.1, \u003c= 2.0.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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\u2019s 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`."
    }
  ],
  "id": "CVE-2026-100369",
  "lastModified": "2026-09-25T21:17:21.247",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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      "source": "security-advisories@github.com",
      "url": "https://github.com/alastairlundy/CliInvoke/security/advisories/GHSA-j73w-8hfr-4gc9"
    }
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    }
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}

GHSA-J73W-8HFR-4GC9

Vulnerability from github – Published: 2026-09-25 21:41 – Updated: 2026-09-25 21:41

Summary

CliInvoke: Argument Injection in Extensibility Runner Factory

Details

Impact

An argument-injection vulnerability exists in the CliInvoke package's runner factory: RunnerProcessFactory on the 2.x line and RunnerConfigurationFactory on the 3.x line.

The factory joins the runner arguments, the caller's target, and the caller's arguments into a single ProcessStartInfo.Arguments string and hands it to the OS. The OS command-line parser re-tokenizes the string before the runner sees it. A double quote (") in the target or in any argument closes the OS-level quoted region and lets the next character enter argv as a separate element.

Patches

Upgrade to:

2.8.5 (2.8.x line)
2.9.4 (2.9.x line)
2.10.5 (2.10.x line)
3.0.0-beta.2 (3.x pre-release line)

Workarounds

No complete workaround is available. Until you can upgrade:

Strip " from any target or argument before passing it to the factory. On shell runners, also strip ;, |, &, $, backtick, and parentheses.
Or bypass the factory entirely and build the ProcessConfiguration directly. Set ArgumentList explicitly to the argv you want the runner to receive.

These are partial mitigations. They shift the quoting problem to your code.

Severity

8.4 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.8.4"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "CliInvoke"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.8.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.9.3"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "CliInvoke"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.9.0"
            },
            {
              "fixed": "2.9.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.10.4"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "CliInvoke"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.10.0"
            },
            {
              "fixed": "2.10.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 3.0.0-beta.1"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "CliInvoke"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0-alpha.1"
            },
            {
              "fixed": "3.0.0-beta.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.0.0"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "AlastairLundy.CliInvoke"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0-alpha.1"
            },
            {
              "fixed": "2.0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-100369"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-88"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-25T21:41:36Z",
    "nvd_published_at": "2026-09-25T21:17:21Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nAn argument-injection vulnerability exists in the `CliInvoke`\npackage\u0027s 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\u0027s target, and the\ncaller\u0027s 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 `;`, `|`, `\u0026`, `$`, 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.",
  "id": "GHSA-j73w-8hfr-4gc9",
  "modified": "2026-09-25T21:41:36Z",
  "published": "2026-09-25T21:41:36Z",
  "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "CliInvoke: Argument Injection in Extensibility Runner Factory"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-100369 (GCVE-0-2026-100369)

FKIE_CVE-2026-100369

GHSA-J73W-8HFR-4GC9

Impact

Patches

Workarounds

Tags

Sightings

Nomenclature

Related by attack behaviour