LangGraph: Namespace labels containing `.` reach other namespaces in Postgres and SQLite stores

{
  "id": "ffd33a69d105ec476683cd48551dd676b7c9910f72c083c85a5955bdda52939c",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-115883",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "LangGraph: Namespace labels containing `.` reach other namespaces in Postgres and SQLite stores",
    "summary": "LangGraph checkpoint savers provide Postgres- and SQLite-backed state persistence for LangGraph workflows and agents. Prior to langgraph-checkpoint-postgres 3.1.3 and langgraph-checkpoint-sqlite 3.1.2, PostgresStore, AsyncPostgresStore, SqliteStore, and AsyncSqliteStore flatten namespace labels with \".\".join(namespace), while BaseStore validates labels only for put and aput. Unvalidated dotted labels passed through get, search, delete, list_namespaces, their asynchronous equivalents, or direct batch and abatch operations can resolve to another tenant's stored namespace, allowing cross-namespace reads, overwrites, or deletion. InMemoryStore is not affected because it compares namespace tuples. This issue is fixed in langgraph-checkpoint-postgres 3.1.3 and langgraph-checkpoint-sqlite 3.1.2.",
    "evidence": "cve:CVE-2026-115883",
    "products": [
      {
        "name": {
          "value": "langgraph",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      },
      {
        "name": {
          "value": "langgraph-checkpoint-postgres",
          "evidence": "/containers/cna/affected/1/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      },
      {
        "name": {
          "value": "langgraph-checkpoint-sqlite",
          "evidence": "/containers/cna/affected/2/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-115883",
      "aliases": [
        "CVE-2026-115883"
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 6,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "privilegesRequired": "LOW",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "LOW",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH"
          }
        }
      ],
      "affected": [
        {
          "vendor": "langchain-ai",
          "product": "langgraph",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.2.15"
            }
          ]
        },
        {
          "vendor": "langchain-ai",
          "product": "langgraph-checkpoint-postgres",
          "versions": [
            {
              "status": "affected",
              "version": "< 3.1.3"
            }
          ]
        },
        {
          "vendor": "langchain-ai",
          "product": "langgraph-checkpoint-sqlite",
          "versions": [
            {
              "status": "affected",
              "version": "< 3.1.2"
            }
          ]
        }
      ],
      "modified": "2026-10-26T17:42:32.027Z",
      "provider": "cve",
      "references": [
        "https://github.com/langchain-ai/langgraph/security/advisories/GHSA-6hmw-9432-67qq",
        "https://github.com/langchain-ai/langgraph/pull/9217",
        "https://github.com/langchain-ai/langgraph/commit/bfcfea554ed5c7f7be562cebf8825e911b493ab1"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-115883",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-26T15:39:07.446530Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-26T17:42:32.027Z"
            }
          }
        ],
        "cna": {
          "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
          "shortName": "GitHub_M",
          "dateUpdated": "2026-10-23T21:12:34.523Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-115883",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 326373,
  "published_at": "2026-10-23T21:12:34.523+00:00"
}