LDAP Injection Affecting n8n-nodes-base package, versions <1.121.19>=2.13.0 <2.13.1>=2.14.0 <2.14.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-N8NNODESBASE-15843830
- published31 Mar 2026
- disclosed26 Mar 2026
- creditSean Nejad
Introduced: 26 Mar 2026
NewCVE-2026-33751 (opens in a new tab)How to fix?
Upgrade n8n-nodes-base to version 1.121.19, 2.13.1, 2.14.1 or higher.
Overview
n8n-nodes-base is a Base nodes of n8n
Affected versions of this package are vulnerable to LDAP Injection via the LDAP node's filter escape. An attacker can retrieve unauthorized LDAP records or bypass authentication checks by injecting specially crafted input into LDAP search parameters.
Note: This is only exploitable if the workflow is configured to pass external user input via expressions into the LDAP node's search parameters.
Workaround
This vulnerability can be mitigated by disabling the LDAP node by adding n8n-nodes-base.ldap to the NODES_EXCLUDE environment variable, or avoiding the use of unvalidated external user input in LDAP node search parameters via expressions.