CVE-2026-118667
MEDIUM
MEDIUM
Priority: 0.02
BB Relevance:
59/100
Published: 2026-10-28
Modified: 2026-10-29
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
Low
I:
None
A:
None
Description
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.
Weakness Classification (1)
Affected Software (4)
| Vendor | Product | Version |
|---|---|---|
| langchain-ai | langgraph | >= 1.2.3, < 1.2.14 |
| langchain-ai | langgraph | >= 1.2.3, < 1.2.14 |
| langchain-ai | langgraph-sdk | >= 0.4.0, < 0.4.6 |
| langchain-ai | langgraph-sdk | >= 0.4.0, < 0.4.6 |