HIGHPyPI

LangChain MongoDB has NoSQL Operator Injection in MongoDBSaver.list() leading to cross-tenant data exposure

LangChain MongoDB has NoSQL Operator Injection in MongoDBSaver.list() leading to cross-tenant data exposure

CVE-2026-55253Published 6 days agoUpdated 6 days agoSource: OSV

Affected packages

  • langgraph-checkpoint-mongodbbefore 0.3.0
  • langgraph-store-mongodbbefore 0.4.0

Exploit signal

Known exploited (CISA KEV)
No
EPSS score
EPSS percentile

EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.

LangChain MongoDB has NoSQL Operator Injection in MongoDBSaver.list() leading to cross-tenant data exposure | HackTribune