AI Threat Alert
CVE-2026-103256
HIGHn8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain a credentials leak vulnerability in the Wekan and Baserow username-and-password credentials that sends unencrypted passwords to unvalidated hosts. Attackers with credential update permissions can modify the host field to receive account...
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-2026-103256?
n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain a credentials leak vulnerability in the Wekan and Baserow username-and-password credentials that sends unencrypted passwords to unvalidated hosts. Attackers with credential update permissions can modify the host field to receive account passwords at arbitrary hosts, bypassing domain validation controls.
Is CVE-2026-103256 actively exploited?
No confirmed active exploitation of CVE-2026-103256 has been reported, but organizations should still patch proactively.
How to fix CVE-2026-103256?
No patch is currently available. Monitor vendor advisories for updates.
What is the CVSS score for CVE-2026-103256?
CVE-2026-103256 has a CVSS v3.1 base score of 7.1 (HIGH).
What are the technical details?
Original Advisory
n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain a credentials leak vulnerability in the Wekan and Baserow username-and-password credentials that sends unencrypted passwords to unvalidated hosts. Attackers with credential update permissions can modify the host field to receive account passwords at arbitrary hosts, bypassing domain validation controls.
Weaknesses (CWE)
CWE-522 — Insufficiently Protected Credentials: The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
- [Architecture and Design] Use an appropriate security mechanism to protect the credentials.
- [Architecture and Design] Make appropriate use of cryptography to protect the credentials.
Source: MITRE CWE corpus.
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N