{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "langgraph",
          "vendor": "langchain-ai",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.2.3, \u003c 1.2.14"
            }
          ]
        },
        {
          "product": "langgraph-sdk",
          "vendor": "langchain-ai",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.4.0, \u003c 0.4.6"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T20:51:46.657Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "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"
        }
      ],
      "source": {
        "advisory": "GHSA-3fx2-cqw9-xr3c",
        "discovery": "UNKNOWN"
      },
      "title": "LangGraph: Unencoded identifiers in LangGraph SDK v3 streaming can redirect authenticated GET requests"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-118667",
    "datePublished": "2026-10-28T20:51:46.657Z",
    "dateReserved": "2026-10-28T17:25:37.562Z",
    "dateUpdated": "2026-10-28T20:51:46.657Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}