Detections
Analytics

SCA: security update for n8n (GHSA-w83q-mcmx-mh42)

medium Tenable Cloud Security Plugin ID 439258

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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.
 (CVE-2026-33751)

Solution

Update the n8n library and its related packages to version 1.123.27 or later.

See Also

https://github.com/advisories/GHSA-w83q-mcmx-mh42

Plugin Details

Severity: Medium

ID: 439258

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 3/26/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.71

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-33751

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.2

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/26/2026

Vulnerability Publication Date: 3/25/2026

Reference Information

CVE: CVE-2026-33751

cwe: CWE-90