CVE-2026-33665 Details
n8n is an open source workflow automation platform. Prior to versions 2.4.0 and 1.121.0, when LDAP authentication is enabled, n8n automatically linked an LDAP identity to an existing local account if the LDAP email attribute matched the local account's email. An authenticated LDAP user who could control their own LDAP email attribute could set it to match another user's email — including an administrator's — and upon login gain full access to that account. The account linkage persisted even if the LDAP email was later reverted, resulting in a permanent account takeover. LDAP authentication must be configured and active (non-default). The issue has been fixed in n8n versions 2.4.0 and 1.121.0. Users should upgrade to one of these versions or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations: Disable LDAP authentication until the instance can be upgraded, restrict LDAP directory permissions so that users cannot modify their own email attributes, and/or audit existing LDAP-linked accounts for unexpected account associations. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
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Exploit prediction scoring system (EPSS) score for CVE-2026-33665
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.02 Probability of exploitation activity being observed over the next 30 days (4th percentile)
CVSS score for CVE-2026-33665
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
7.5 High
Products affected by CVE-2026-33665
N8n 0.183.0
N8n 1.100.1
N8n 1.101.1
N8n 1.101.2
N8n 1.102.3
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-33665 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 1,420 32.01%
DE 685 15.44%
FR 215 4.85%
VN 203 4.58%
SG 172 3.88%
CN 162 3.65%
IN 159 3.58%
RU 137 3.09%
GB 134 3.02%
NL 113 2.55%

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CVE-2026-33665 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 3,175 90.56%
Telecommunications 276 7.87%
Education 24 0.68%
Retail 10 0.29%
Business Services 5 0.14%
Engineering 4 0.11%
Government/Politics 4 0.11%
Media/Entertainment 3 0.09%
Finance 1 0.03%
Manufacturing 1 0.03%

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