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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
Affected packages
- langgraph-store-mongodb— before 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.
Sources
- https://github.com/langchain-ai/langchain-mongodb/security/advisories/GHSA-533j-2v4q-mw5h
- https://github.com/langchain-ai/langchain-mongodb
- https://github.com/langchain-ai/langchain-mongodb/releases/tag/libs%2Flanggraph-checkpoint-mongodb%2Fv0.4.0
- https://github.com/langchain-ai/langchain-mongodb/releases/tag/libs%2Flanggraph-store-mongodb%2Fv0.3.0
- https://pypi.org/project/langgraph-store-mongodb
- https://github.com/advisories/GHSA-533j-2v4q-mw5h
- https://nvd.nist.gov/vuln/detail/CVE-2026-55253
Structured record: https://osv.dev/vulnerability/PYSEC-2026-3860
Recommended response stack
Snyk — Scan your dependencies in CI and fix this vulnerability.→Socket — Detect malicious and compromised packages before they ship.→
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