HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-103250 — n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2...

·Source: NIST NVD

Updated:

Executive Summary

n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a NoSQL injection vulnerability in the MongoDB Chat Memory node that fails to validate the sessionId parameter. Unauthenticated attackers can supply MongoDB query operators in the sessionId field to access conversation histories from other users and perform unauthorized write and delete operations.

Analysis

n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a NoSQL injection vulnerability in the MongoDB Chat Memory node that fails to validate the sessionId parameter. Unauthenticated attackers can supply MongoDB query operators in the sessionId field to access conversation histories from other users and perform unauthorized write and delete operations. CVSS Score: 8.1. Published: 2026-10-01T11:17:18.777.

Indicators of Compromise (1)

CVE (1)
CVE-2026-103250
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Oct 1, 2026. Verified by: NIST.

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