# CVE-2025-67644 — langchain-ai langgraph

> As of 2025-12-11, CVE-2025-67644 is a HIGH-severity vulnerability in langchain-ai langgraph, CVSS v3.1 7.3, EPSS 2.3% (82.8th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2025-67644, most recently “LangGraph Checkpointer: Chained SQLi-to-RCE via Unsafe msgpack Deserialization (CVE-2025-67644, CVE-2026-28277, CVE-2026-27022)”.

**Last updated:** 2025-12-11

## What is CVE-2025-67644?

LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync and async, via aiosqlite). Versions 3.0.0 and below are vulnerable to SQL injection through the checkpoint implementation. Checkpoint allows attackers to manipulate SQL queries through metadata filter keys, affecting applications that accept untrusted metadata filter keys (not just filter values) in checkpoint search operations. The _metadata_predicate() function constructs SQL queries by interpolating filter keys directly into f-strings without validation. This issue is fixed in version 3.0.1.

The record classifies CVE-2025-67644 under weakness class [CWE-89](https://intel.threadlinqs.com/cwe/CWE-89). Its CVSS v3 base vector states that the flaw requires local access to the host, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 321 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.3 — HIGH (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N`)
- **EPSS (FIRST):** 2.3% probability of exploitation in the next 30 days, higher than 82.8% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 9/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2025-12-10, last modified 2025-12-11

## Is CVE-2025-67644 being exploited?

Weaponised exploit code for CVE-2025-67644 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 34 in the Threadlinqs vulnerability feed.

- [mbanyamer/CVE-2025-67644-LangGraph-3.0.1-SQLite-Checkpoint-SQL-Injection](https://github.com/mbanyamer/CVE-2025-67644-LangGraph-3.0.1-SQLite-Checkpoint-SQL-Injection) (github)

## Affected products and versions

- **langchain-ai**: langgraph

## How to fix CVE-2025-67644

No vendor patch reference has been recorded for CVE-2025-67644 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2025-67644

1 tracked threat in the Threadlinqs corpus references CVE-2025-67644, either in the campaign’s CVE list or as an indicator on the campaign record.

- [LangGraph Checkpointer: Chained SQLi-to-RCE via Unsafe msgpack Deserialization (CVE-2025-67644, CVE-2026-28277, CVE-2026-27022)](https://intel.threadlinqs.com/threat/TL-2026-0778) — CRITICAL · 2026-06-11

## Sources

Enriched from CVE.org, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-10-10.

**Vendor advisory and patch**

- [github.com](https://github.com/langchain-ai/langgraph/security/advisories/GHSA-9rwj-6rc7-p77c)

**Other references**

- [github.com](https://github.com/langchain-ai/langgraph/commit/297242913f8ad2143ee3e2f72e67db0911d48e2a)

Canonical: https://intel.threadlinqs.com/cve/CVE-2025-67644
Full detection coverage and IOCs for threats exploiting CVE-2025-67644 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp