CVE-2026-33751 Details
n8n is an open source workflow automation platform. Prior to versions 1.123.27, 2.13.3, and 2.14.1, a flaw in the LDAP node's filter escape logic allowed LDAP metacharacters to pass through unescaped when user-controlled input was interpolated into LDAP search filters. In workflows where external user input is passed via expressions into the LDAP node's search parameters, an attacker could manipulate the constructed filter to retrieve unintended LDAP records or bypass authentication checks implemented in the workflow. Exploitation requires a specific workflow configuration. The LDAP node must be used with user-controlled input passed via expressions (e.g., from a form or webhook). The issue has been fixed in n8n versions 1.123.27, 2.13.3, and 2.14.1. 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: Limit workflow creation and editing permissions to fully trusted users only, disable the LDAP node by adding `n8n-nodes-base.ldap` to the `NODES_EXCLUDE` environment variable, and/or avoid passing unvalidated external user input into LDAP node search parameters via expressions. 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-2026-33751
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%).
0.07 Probability of exploitation activity being observed over the next 30 days (21st percentile)
CVSS score for CVE-2026-33751
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.
4.8 Medium
Products affected by CVE-2026-33751
N8n 1.110.0
N8n 1.110.1
N8n 1.111.0
N8n 1.111.1
N8n 1.112.3
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-2026-33751 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 4,193 30.62%
DE 2,382 17.39%
FR 642 4.69%
SG 574 4.19%
GB 493 3.60%
CN 459 3.35%
VN 438 3.20%
IN 434 3.17%
RU 390 2.85%
NL 334 2.44%

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CVE-2026-33751 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 9,939 91.42%
Telecommunications 779 7.17%
Education 59 0.54%
Retail 26 0.24%
Government/Politics 11 0.10%
Business Services 11 0.10%
Media/Entertainment 9 0.08%
Consumer Goods 6 0.06%
Engineering 6 0.06%
Healthcare/Wellness 4 0.04%

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