CVE-2026-103250

HighCVSS 8.1/10Last modified Oct 6, 2026

Description

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.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L

Weakness enumeration

CWE-943

Affected software

No affected versions have been published.

Timeline

Published
Oct 1, 2026
Last modified
Oct 6, 2026
NVD status
Deferred

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CVE-2026-103250: High severity, CVSS 8.1 | Vulnix