CVE-2026-118667

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...

LangGraph: Unencoded identifiers in LangGraph SDK v3 streaming can redirect authenticated GET requests

Summary The LangGraph Python SDK v3 streaming client interpolates caller-supplied threadid and assistantid values into request paths without encoding them at four synchronous and asynchronous call sites. Relative path segments can therefore redirect an authenticated GET request to another path on...

GHSA-3FX2-CQW9-XR3C LangGraph: Unencoded identifiers in LangGraph SDK v3 streaming can redirect authenticated GET requests

Summary The LangGraph Python SDK v3 streaming client interpolates caller-supplied threadid and assistantid values into request paths without encoding them at four synchronous and asynchronous call sites. Relative path segments can therefore redirect an authenticated GET request to another path on...

CVE-2026-118667

The LangGraph Python SDK is vulnerable to a path traversal issue in its v3 streaming client (synchronous and asynchronous) across langgraph-sdk versions 0.4.0 through 0.4.5 and langgraph versions 1.2.3 through 1.2.14. The get_tree and _fetch_state helpers fail to use _quote_path_param when interp...

CVE-2026-118667 LangGraph: Unencoded identifiers in LangGraph SDK v3 streaming can redirect authenticated GET requests

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...

CVE-2026-118667 LangGraph: Unencoded identifiers in LangGraph SDK v3 streaming can redirect authenticated GET requests

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...

CVE-2026-118667 LangGraph: Unencoded identifiers in LangGraph SDK v3 streaming can redirect authenticated GET requests

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...

CVE-2026-118667: Improper Limitation of a Pathname to a Restricted Directory

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...

PT-2026-129188

Name of the Vulnerable Software and Affected Versions langgraph-sdk versions 0.4.0 through 0.4.5 langgraph versions 1.2.3 through 1.2.13 Description The LangGraph Python SDK v3 streaming client fails to encode caller-supplied thread id and assistant id values when interpolating them into request...

OPENSUSE-SU-2026:12279-1 python313-langgraph-sdk-0.4.9-1.1 on GA media

These are all security issues fixed in the python313-langgraph-sdk-0.4.9-1.1 package on the GA media of openSUSE Tumbleweed...

PT-2026-127774

These are all security issues fixed in the python313-langgraph-sdk-0.4.9-1.1 package on the GA media of openSUSE Tumbleweed...

LangGraph SDK custom auth silently ignores actions= on resource decorators

ImpactWhat kind of vulnerability is it? Who is impacted?langgraph-sdk incorrectly applies the actions= argument on resource-scoped authorization decorators, including @auth.on.threads, @auth.on.assistants, and @auth.on.crons.In affected versions, a decorator such...

PYSEC-2026-4240 LangGraph SDK custom auth silently ignores actions= on resource decorators

Impact What kind of vulnerability is it? Who is impacted? langgraph-sdk incorrectly applies the actions= argument on resource-scoped authorization decorators, including @auth.on.threads, @auth.on.assistants, and @auth.on.crons. In affected versions, a decorator such as: python...

a2a-client-handler (0.1.0), abs-langchain-suite (>=0.1.5, <=0.3.1) +470 more potentially affected by CVE-2026-104873 via langgraph-sdk (>=0.1.48, <=0.4.3)

langgraph-sdk PYPI version =0.1.48, =0.1.5, =0.1.0, =0.1.0, =0.1.1, =0.1.1, =0.0.1a0, =2.1.7, =0.0.2, =0.1.1, =0.1.0, =0.2.0a1, =0.2.5a2, =1.1.0 and more Source cves: CVE-2026-104873 Source advisory: OSV:PYSEC-2026-4240...

ROOT-APP-PYPI-CVE-2026-104873 CVE-2026-104873 in langgraph-sdk - Patched by Root

Root has patched CVE-2026-104873 in the langgraph-sdk package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-CVE-2026-48776 CVE-2026-48776 in langgraph-sdk - Patched by Root

Root has patched CVE-2026-48776 in the langgraph-sdk package for Root:PyPI. Multiple fixed versions available...

LangGraph SDK custom auth silently ignores actions= on resource decorators

Impact What kind of vulnerability is it? Who is impacted? langgraph-sdk incorrectly applies the actions= argument on resource-scoped authorization decorators, including @auth.on.threads, @auth.on.assistants, and @auth.on.crons. In affected versions, a decorator such as: python...

GHSA-FVWW-7H3R-VFHP LangGraph SDK custom auth silently ignores actions= on resource decorators

Impact What kind of vulnerability is it? Who is impacted? langgraph-sdk incorrectly applies the actions= argument on resource-scoped authorization decorators, including @auth.on.threads, @auth.on.assistants, and @auth.on.crons. In affected versions, a decorator such as: python...

a2a-client-handler (0.1.0), abs-langchain-suite (>=0.1.5, <=0.3.1) +470 more potentially affected by CVE-2026-104873 via langgraph-sdk (>=0.1.48, <=0.4.3)

langgraph-sdk PYPI version =0.1.48, =0.1.5, =0.1.0, =0.1.0, =0.1.1, =0.1.1, =0.0.1a0, =2.1.7, =0.0.2, =0.1.1, =0.1.0, =0.2.0a1, =0.2.5a2, =1.1.0 and more Source cves: CVE-2026-104873 Source advisory: GHSA-FVWW-7H3R-VFHP...

a2a-client-handler (0.1.0), abs-langchain-suite (>=0.1.5, <=0.3.1) +470 more potentially affected by CVE-2026-104873 via langgraph-sdk (>=0.1.48, <=0.4.3)

langgraph-sdk PYPI version =0.1.48, =0.1.5, =0.1.0, =0.1.0, =0.1.1, =0.1.1, =0.0.1a0, =2.1.7, =0.0.2, =0.1.1, =0.1.0, =0.2.0a1, =0.2.5a2, =1.1.0 and more Source cves: CVE-2026-104873 Source advisory: OSV:GHSA-FVWW-7H3R-VFHP...