CVE-2026-71433: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in langchain-ai langgraph
A vulnerability in langgraph's checkpoint saver implementations for Postgres and SQLite allows an authenticated user to access stored items belonging to other tenants or users due to improper namespace scoping. This occurs because hierarchical namespaces are persisted as dot-joined strings and reads are scoped by prefix matching, which can overlap with sibling namespaces or those containing unescaped pattern metacharacters. The issue affects versions prior to 3.1.1 and is fixed in version 3.1.1.
AI Analysis
Technical Summary
LangGraph Checkpoint Postgres and SQLite implementations persist hierarchical namespaces as dot-joined strings and scope reads by prefix matching. Prior to version 3.1.1, this method allowed an authenticated caller to retrieve stored items from other tenants or users because a read scoped to one namespace could also match sibling namespaces sharing the same leading characters or namespaces with unescaped pattern metacharacters. No crafted input is required to exploit this issue. The vulnerability is addressed in langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite version 3.1.1.
Potential Impact
An authenticated user can access sensitive information stored under other tenants' or users' namespaces without authorization. This exposure of sensitive data violates confidentiality but does not affect integrity or availability.
Mitigation Recommendations
Upgrade langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite to version 3.1.1 or later, where the issue is fixed. Patch status is confirmed by the vendor advisory indicating the fix in version 3.1.1.
CVE-2026-71433: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in langchain-ai langgraph
Description
A vulnerability in langgraph's checkpoint saver implementations for Postgres and SQLite allows an authenticated user to access stored items belonging to other tenants or users due to improper namespace scoping. This occurs because hierarchical namespaces are persisted as dot-joined strings and reads are scoped by prefix matching, which can overlap with sibling namespaces or those containing unescaped pattern metacharacters. The issue affects versions prior to 3.1.1 and is fixed in version 3.1.1.
CVSS v3.1
Score 5.3medium
Affected software
langchain-ai
langgraph
langchain-ai
langgraph-checkpoint-sqlite
langchain-ai
langgraph-checkpoint-postgres
pkg:github/langchain-ai/langgraph-checkpoint-postgrespkg:github/langchain-ai/langgraph-checkpoint-sqliteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
LangGraph Checkpoint Postgres and SQLite implementations persist hierarchical namespaces as dot-joined strings and scope reads by prefix matching. Prior to version 3.1.1, this method allowed an authenticated caller to retrieve stored items from other tenants or users because a read scoped to one namespace could also match sibling namespaces sharing the same leading characters or namespaces with unescaped pattern metacharacters. No crafted input is required to exploit this issue. The vulnerability is addressed in langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite version 3.1.1.
Potential Impact
An authenticated user can access sensitive information stored under other tenants' or users' namespaces without authorization. This exposure of sensitive data violates confidentiality but does not affect integrity or availability.
Mitigation Recommendations
Upgrade langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite to version 3.1.1 or later, where the issue is fixed. Patch status is confirmed by the vendor advisory indicating the fix in version 3.1.1.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-06T16:28:51.182Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a75070dbf8831d5395f5c83
Added to database: 08/06/2026, 22:13:33 UTC
Last enriched: 08/14/2026, 16:17:09 UTC
Last updated: 09/21/2026, 22:01:37 UTC
Views: 42
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