LangChain, LangGraph Flaws Expose Files, Secrets, Databases in Widely Used AI Frameworks

Cybersecurity researchers have disclosed three security vulnerabilities impacting LangChain and LangGraph that, if successfully exploited, could expose filesystem data, environment secrets, and conversation history. Both LangChain and LangGraph are open-source frameworks that are used to build...

CVE-2026-28277

LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB both sync and async, via aiosqlite. In version 1.0.9 and prior, LangGraph checkpointers can load msgpack-encoded checkpoints that reconstruct Python objects during deserialization. If an attacker can...

adxp-cli (>=0.1.1 <=0.1.21), ag-ui-langgraph (>=0.0.14 <=0.0.29) +115 more potentially affected by CVE-2026-28277 via langgraph (>=1.0.0 <=1.0.10)

langgraph PYPI version =1.0.0, =0.1.1, =0.0.14, =0.0.2, =0.1.0, =0.2.1, =0.1.0, =0.1.0, =0.0.48, =0.0.54, =0.1.2, =0.1.4, =0.2.0 - chatlas-frontend =1.0.0 and more Source cves: CVE-2026-28277 Source advisory: SNYK:PYTHON-LANGGRAPH-15433492...

Deserialization of Untrusted Data

Overview langgraph-checkpoint is a library with base interfaces for LangGraph checkpoint savers. Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the msgpack-encoded checkpoints. An attacker can execute arbitrary code by supplying a crafted msgpack-encoded...

agent-nexus-cli (>=0.1.0 <=0.1.31), agentiva (>=0.1.0 <=0.1.5) potentially affected by CVE-2026-28277 via langgraph-checkpoint (>=4.0.0 <=4.0.1)

langgraph-checkpoint PYPI version =4.0.0, =0.1.0, =0.1.0, =0.1.5 Source cves: CVE-2026-28277 Source advisory: SNYK:PYTHON-LANGGRAPHCHECKPOINT-15433491...

Deserialization of Untrusted Data

Overview langgraph is a Building stateful, multi-actor applications with LLMs Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the msgpack-encoded checkpoints. An attacker can execute arbitrary code by supplying a crafted msgpack-encoded payload to the...

LangGraph checkpoint loading has unsafe msgpack deserialization

LangGraph checkpointers can load msgpack-encoded checkpoints that reconstruct Python objects during deserialization. If an attacker can modify checkpoint data in the backing store for example, after a database compromise or other privileged write access to the persistence layer, they can...

GHSA-G48C-2WQR-H844 LangGraph checkpoint loading has unsafe msgpack deserialization

LangGraph checkpointers can load msgpack-encoded checkpoints that reconstruct Python objects during deserialization. If an attacker can modify checkpoint data in the backing store for example, after a database compromise or other privileged write access to the persistence layer, they can...

EUVD-2026-9860

LangGraph checkpoint loading has unsafe msgpack deserialization...

a-mailx (=0.1.0), a2a-client-handler (=0.1.0) +366 more potentially affected by CVE-2026-28277 via langgraph (>=0.1.15 <=1.0.1)

langgraph PYPI version =0.1.15, =0.1.5, =0.1.0, =0.1.1, =0.1.1, =0.0.1, =2.1.7, =0.0.2, =0.0.1, =0.1.1, =0.1.2, =0.0.4, =0.5.10 and more Source cves: CVE-2026-28277 Source advisory: OSV:GHSA-G48C-2WQR-H844...

a-mailx (=0.1.0), a2a-client-handler (=0.1.0) +429 more potentially affected by CVE-2026-28277 via langgraph (>=0.1.15 <=1.0.10)

langgraph PYPI version =0.1.15, =0.1.5, =0.1.0, =0.1.1, =0.1.1, =0.0.1, =2.1.7, =0.0.2, =0.0.1, =0.1.1, =0.1.2, =0.0.4, =0.5.10 and more Source cves: CVE-2026-28277 Source advisory: OSV:PYSEC-2026-83...

PYSEC-2026-83

LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB both sync and async, via aiosqlite. In version 1.0.9 and prior, LangGraph checkpointers can load msgpack-encoded checkpoints that reconstruct Python objects during deserialization. If an attacker can...

PYSEC-2026-83

LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB both sync and async, via aiosqlite. In version 1.0.9 and prior, LangGraph checkpointers can load msgpack-encoded checkpoints that reconstruct Python objects during deserialization. If an attacker can...

CVE-2026-28277

LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB both sync and async, via aiosqlite. In version 1.0.9 and prior, LangGraph checkpointers can load msgpack-encoded checkpoints that reconstruct Python objects during deserialization. If an attacker can...

CVE-2026-28277 LangGraph: Unsafe msgpack deserialization in LangGraph checkpoint loading

LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB both sync and async, via aiosqlite. In version 1.0.9 and prior, LangGraph checkpointers can load msgpack-encoded checkpoints that reconstruct Python objects during deserialization. If an attacker can...

CVE-2026-28277

LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB both sync and async, via aiosqlite. In version 1.0.9 and prior, LangGraph checkpointers can load msgpack-encoded checkpoints that reconstruct Python objects during deserialization. If an attacker can...

CVE-2026-28277 LangGraph: Unsafe msgpack deserialization in LangGraph checkpoint loading

LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB both sync and async, via aiosqlite. In version 1.0.9 and prior, LangGraph checkpointers can load msgpack-encoded checkpoints that reconstruct Python objects during deserialization. If an attacker can...

CVE-2026-28277 LangGraph: Unsafe msgpack deserialization in LangGraph checkpoint loading

LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB both sync and async, via aiosqlite. In version 1.0.9 and prior, LangGraph checkpointers can load msgpack-encoded checkpoints that reconstruct Python objects during deserialization. If an attacker can...

CVE-2026-28277

CVE-2026-28277 affects LangGraph checkpoint loading using an SQLite-backed checkpoint store. In versions ≤1.0.9, msgpack-encoded checkpoints may deserialize into Python objects, enabling an attacker with write access to the checkpoint store to craft payloads that trigger unsafe reconstruction whe...

langgraph 代码问题漏洞

Langgraph is a large-scale model framework developed by LangChain. Versions of Langgraph 1.0.9 and earlier contained code vulnerabilities. These vulnerabilities stemmed from the possibility of re-creating Python objects during deserialization, which could lead to insecure object reconstruction...