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Advisory record · GHSA-533j-2v4q-mw5h

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

CVSS 7.7 HighEPSS 0.0053 · 45th percentile

Published by the GitHub Advisory Database at 20 Aug 2026, 17:29 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
langgraph-checkpoint-mongodbPyPI<0.3.00.3.0
langgraph-store-mongodbPyPI<0.4.00.4.0
Identifiers
GHSA-533j-2v4q-mw5h · CVE-2026-55253 · PYSEC-2026-3859 · PYSEC-2026-3860
Weakness (CWE)
CWE-943
Tags
Published
20 Aug 2026
Updated
10 Sept 2026

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.7 High 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0053, the 45th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:10 UTC First seen by agentprime
  2. 31 Oct 2026, 14:10 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.