Answer in brief
CVE-2026-71433 records a Medium severity (CVSS 5.3) vulnerability in LangGraph: Namespace prefix matching crosses segment boundaries in Postgres and SQLite stores. The current sources do not mark it as known exploited. The current feed maps langchain-ai/langgraph (generic), langchain-ai/langgraph-checkpoint-postgres (generic), langchain-ai/langgraph-checkpoint-sqlite (generic), langgraph-checkpoint-postgres (pip) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-71433 records a Medium severity (CVSS 5.3) vulnerability in LangGraph: Namespace prefix matching crosses segment boundaries in Postgres and SQLite stores. The current sources do not mark it as known exploited. The current feed maps langchain-ai/langgraph (generic), langchain-ai/langgraph-checkpoint-postgres (generic), langchain-ai/langgraph-checkpoint-sqlite (generic), langgraph-checkpoint-postgres (pip) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps langchain-ai/langgraph (generic), langchain-ai/langgraph-checkpoint-postgres (generic), langchain-ai/langgraph-checkpoint-sqlite (generic), langgraph-checkpoint-postgres (pip) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| langchain-ai/langgraphgeneric | < 3.1.1 | Not reported |
| langchain-ai/langgraph-checkpoint-postgresgeneric | < 3.1.1 | Not reported |
| langchain-ai/langgraph-checkpoint-sqlitegeneric | < 3.1.1 | Not reported |
| langgraph-checkpoint-postgrespip | <3.1.1 | 3.1.1 |
| langgraph-checkpoint-sqlitepip | <3.1.1 | 3.1.1 |
Published upstream
Aug 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 6, 2026
LangGraph Checkpoint Postgres and SQLite Checkpoint are the Postgres and SQLite implementations of LangGraph's checkpoint saver. Prior to 3.1.1, the langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite packages persisted hierarchical namespaces as a dot joined string and scoped reads by matching that string as a simple prefix pattern, so a read scoped to one namespace could also match a sibling namespace whose flattened form shares the same leading characters, or a namespace label containing unescaped pattern metacharacters, allowing an authenticated caller to retrieve stored items belonging to another tenant or user through an ordinary scoped search or list namespaces call, with no crafted input required. This issue is fixed in versions 3.1.1 of langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite.
Quoted source text, attributed separately from HOL analysis.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps langchain-ai/langgraph (generic), langchain-ai/langgraph-checkpoint-postgres (generic), langchain-ai/langgraph-checkpoint-sqlite (generic), langgraph-checkpoint-postgres (pip) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| langchain-ai/langgraphgeneric | < 3.1.1 | Not reported |
| langchain-ai/langgraph-checkpoint-postgresgeneric | < 3.1.1 | Not reported |
| langchain-ai/langgraph-checkpoint-sqlitegeneric | < 3.1.1 | Not reported |
| langgraph-checkpoint-postgrespip | <3.1.1 | 3.1.1 |
| langgraph-checkpoint-sqlitepip | <3.1.1 | 3.1.1 |
Published upstream
Aug 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 6, 2026
LangGraph Checkpoint Postgres and SQLite Checkpoint are the Postgres and SQLite implementations of LangGraph's checkpoint saver. Prior to 3.1.1, the langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite packages persisted hierarchical namespaces as a dot joined string and scoped reads by matching that string as a simple prefix pattern, so a read scoped to one namespace could also match a sibling namespace whose flattened form shares the same leading characters, or a namespace label containing unescaped pattern metacharacters, allowing an authenticated caller to retrieve stored items belonging to another tenant or user through an ordinary scoped search or list namespaces call, with no crafted input required. This issue is fixed in versions 3.1.1 of langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite.
Quoted source text, attributed separately from HOL analysis.