{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-59176",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-02T19:53:48.829Z",
        "datePublished": "2026-10-28T13:08:52.592Z",
        "dateUpdated": "2026-10-28T13:08:52.592Z"
    },
    "containers": {
        "cna": {
            "title": "Functype: MCP set_functype_version Package Alias RCE via Unsanitized pnpm install + Dynamic Import",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-829",
                            "lang": "en",
                            "description": "CWE-829: Inclusion of Functionality from Untrusted Control Sphere",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "LOCAL",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.8,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/jordanburke/functype/security/advisories/GHSA-wcjj-9m6g-2fr2",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/jordanburke/functype/security/advisories/GHSA-wcjj-9m6g-2fr2"
                },
                {
                    "name": "https://github.com/jordanburke/functype/commit/c0d58ad9c2a7d15c6117bd3adbbd75de37317dcf",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/jordanburke/functype/commit/c0d58ad9c2a7d15c6117bd3adbbd75de37317dcf"
                },
                {
                    "name": "https://github.com/jordanburke/functype/releases/tag/v1.4.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/jordanburke/functype/releases/tag/v1.4.4"
                }
            ],
            "affected": [
                {
                    "vendor": "jordanburke",
                    "product": "functype",
                    "versions": [
                        {
                            "version": "< 1.4.4",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-28T13:08:52.592Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Functype is a family of TypeScript functional programming libraries. Prior to 1.4.4, the `set_functype_version` MCP tool in `functype-mcp-server` accepts an unconstrained `version` string using only `z.string()` validation in `packages/mcp-server/src/index.ts` and interpolates it into `functype@<version>` for `pnpm add`. Package-alias syntaxes such as `file:`, `npm:`, URLs, or paths can cause an arbitrary local or remote package to be installed as functype. Immediately afterward, `initDocsData(true)` in `packages/mcp-server/src/lib/docs/data.ts` resolves `functype/cli` and dynamically imports the newly installed module, executing attacker-controlled JavaScript with the MCP server process's privileges. Any MCP client able to send a `tools/call` request invoking the tool can exploit the flaw; the tool is enabled by default without authentication in `stdio` mode. A connected AI assistant susceptible to indirect prompt injection can also be induced to invoke it from a malicious document or web page. In non-default `TRANSPORT_TYPE=httpStream` deployments, a network-accessible attacker does not require local access. Successful execution can read process secrets, modify files, or terminate the server. This issue is fixed in `version` 1.4.4."
                }
            ],
            "source": {
                "advisory": "GHSA-wcjj-9m6g-2fr2",
                "discovery": "UNKNOWN"
            }
        }
    }
}