Medium
LangGraph: Namespace labels containing `.` reach other namespaces in Postgres and SQLite stores
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-115883
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 03:53 UTC · Revision 1
Source evidence
LangGraph: Namespace labels containing `.` reach other namespaces in Postgres and SQLite stores
core-osv · Original sourcePublished 23 Oct 2026, 21:12 UTC
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.
osv:CVE-2026-115883
Complete source record
{
"id": "64b8ade4c6a19ea5e861dd2270519dbbf4b2d142b8d5f8d92e90dbed992322e3",
"url": "https://osv.dev/vulnerability/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": "osv:CVE-2026-115883",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-115883",
"aliases": [
"CVE-2026-115883",
"GHSA-6hmw-9432-67qq"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "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"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/langchain-ai/langgraph",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "08a345637fb2bd499f69c90056a22c478a468817"
},
{
"fixed": "afbe7e48b17f62e139b5c6337ab934549e6dc73b"
},
{
"fixed": "1074714c260486900d9bec9b5dd48e13883dd5df"
},
{
"fixed": "bfcfea554ed5c7f7be562cebf8825e911b493ab1"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.2.15"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "3.1.3"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "3.1.2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "bfcfea554ed5c7f7be562cebf8825e911b493ab1"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-115883.json"
}
}
],
"modified": "2026-10-28T02:30:42.071575463Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115883.json",
"https://github.com/langchain-ai/langgraph/security/advisories/GHSA-6hmw-9432-67qq",
"https://nvd.nist.gov/vuln/detail/CVE-2026-115883",
"https://github.com/langchain-ai/langgraph/commit/bfcfea554ed5c7f7be562cebf8825e911b493ab1",
"https://github.com/langchain-ai/langgraph/pull/9217"
],
"provider_metadata": {
"cwe_ids": [
"CWE-20",
"CWE-863"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115883.json"
}
},
"related_cves": [
{
"value": "CVE-2026-115883",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 510029,
"published_at": "2026-10-23T21:12:34.523+00:00"
}