AI Threat Alert
CVE-2026-103250
HIGHn8n 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...
Full CISO analysis pending enrichment.
How severe is it?
What is the attack surface?
What should I do?
No patch available
Monitor for updates. Consider compensating controls or temporary mitigations.
Which compliance frameworks are affected?
Compliance analysis pending. Sign in for full compliance mapping when available.
Frequently Asked Questions
What is CVE-2026-103250?
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.
Is CVE-2026-103250 actively exploited?
No confirmed active exploitation of CVE-2026-103250 has been reported, but organizations should still patch proactively.
How to fix CVE-2026-103250?
No patch is currently available. Monitor vendor advisories for updates.
What is the CVSS score for CVE-2026-103250?
CVE-2026-103250 has a CVSS v3.1 base score of 8.1 (HIGH).
What are the technical details?
Original Advisory
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.
Weaknesses (CWE)
CWE-943 Improper Neutralization of Special Elements in Data Query Logic
Primary
CWE-943 Improper Neutralization of Special Elements in Data Query Logic CWE-943 — Improper Neutralization of Special Elements in Data Query Logic: The product generates a query intended to access or manipulate data in a data store such as a database, but it does not neutralize or incorrectly neutralizes special elements that can modify the intended logic of the query.
Source: MITRE CWE corpus.
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L