{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-118667",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-28T17:25:37.562Z",
        "datePublished": "2026-10-28T20:51:46.657Z",
        "dateUpdated": "2026-10-28T20:51:46.657Z"
    },
    "containers": {
        "cna": {
            "title": "LangGraph: Unencoded identifiers in LangGraph SDK v3 streaming can redirect authenticated GET requests",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-22",
                            "lang": "en",
                            "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 4.3,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/langchain-ai/langgraph/security/advisories/GHSA-3fx2-cqw9-xr3c",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/langchain-ai/langgraph/security/advisories/GHSA-3fx2-cqw9-xr3c"
                },
                {
                    "name": "https://github.com/langchain-ai/langgraph/pull/9213",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/langchain-ai/langgraph/pull/9213"
                },
                {
                    "name": "https://github.com/langchain-ai/langgraph/commit/d89c7e100ec6fc1512544d23b0a7c5169699ef3e",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/langchain-ai/langgraph/commit/d89c7e100ec6fc1512544d23b0a7c5169699ef3e"
                },
                {
                    "name": "https://github.com/langchain-ai/langgraph/releases/tag/1.2.14",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/langchain-ai/langgraph/releases/tag/1.2.14"
                },
                {
                    "name": "https://github.com/langchain-ai/langgraph/releases/tag/sdk%3D%3D0.4.6",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/langchain-ai/langgraph/releases/tag/sdk%3D%3D0.4.6"
                }
            ],
            "affected": [
                {
                    "vendor": "langchain-ai",
                    "product": "langgraph",
                    "versions": [
                        {
                            "version": ">= 1.2.3, < 1.2.14",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "langchain-ai",
                    "product": "langgraph-sdk",
                    "versions": [
                        {
                            "version": ">= 0.4.0, < 0.4.6",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-28T20:51:46.657Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs from Python applications. From langgraph-sdk 0.4.0 until 0.4.6, and from langgraph 1.2.3 until 1.2.14 when RemoteGraph v3 streaming uses an affected langgraph-sdk version, the synchronous and asynchronous v3 stream get_tree and _fetch_state helpers interpolate caller-controlled assistant_id and thread_id values into authenticated GET request paths without using _quote_path_param. Relative path segments can therefore be normalized into another readable path on the configured server while retaining authentication headers. This issue is fixed in langgraph-sdk 0.4.6 and langgraph 1.2.14."
                }
            ],
            "source": {
                "advisory": "GHSA-3fx2-cqw9-xr3c",
                "discovery": "UNKNOWN"
            }
        }
    }
}