Vulnerability in Langchain-ai Langgraphjs
CVE-2026-48121
@langchain/langgraph-checkpoint-mongodb provides a LangGraph.js CheckpointSaver implementation that uses MongoDB for storage. Versions 1.3.0 and below are vulnerable to NoSQL injection: checkpoint identifiers (thread_id, checkpoint_ns, che…
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N.
Affected products
- Langchain-ai Langgraphjs — versions < 1.3.1
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-48121?
- CVE-2026-48121 is a medium-severity vulnerability in Langchain-ai Langgraphjs, classified under Improper Neutralization of Special Elements in Data Query Logic. CVSS score: 6.7/10. Published 2026-08-04.
- How severe is CVE-2026-48121?
- Medium severity. CVSS v3 base score is 6.7 out of 10.