n8n-io n8n up to 1.123.88/2.45.4/2.46.0/3.0.0 MongoDB node update key sql injection

Summaryinfo

A vulnerability, which was classified as critical, was found in n8n-io n8n up to 1.123.88/2.45.4/2.46.0/3.0.0. Affected by this vulnerability is an unknown functionality of the component MongoDB node. The manipulation of the argument update key results in sql injection. This vulnerability was named CVE-2026-126383. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in n8n-io n8n up to 1.123.88/2.45.4/2.46.0/3.0.0. Affected is some unknown functionality of the component MongoDB node. The manipulation of the argument update key with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

n8n before 1.123.89, 2.x before 2.45.5, 2.46.x before 2.46.1, and 3.x before 3.0.1 contains a NoSQL injection vulnerability in the MongoDB node's Update and Find And Replace operations due to insufficient validation of the update key value taken from incoming items. Attackers who can supply untrusted input, such as a webhook body, to a workflow using these operations can make the node match and overwrite unintended documents or insert new documents in the MongoDB database.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-126383 since 11/10/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1505.

Upgrading to version 1.123.89, 2.45.5, 2.46.1 or 3.0.1 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• n8n-io

Name

• n8n

Version

• 1.123.0
• 1.123.1
• 1.123.2
• 1.123.3
• 1.123.4
• 1.123.5
• 1.123.6
• 1.123.7
• 1.123.8
• 1.123.9
• 1.123.10
• 1.123.11
• 1.123.12
• 1.123.13
• 1.123.14
• 1.123.15
• 1.123.16
• 1.123.17
• 1.123.18
• 1.123.19
• 1.123.20
• 1.123.21
• 1.123.22
• 1.123.23
• 1.123.24
• 1.123.25
• 1.123.26
• 1.123.27
• 1.123.28
• 1.123.29
• 1.123.30
• 1.123.31
• 1.123.32
• 1.123.33
• 1.123.34
• 1.123.35
• 1.123.36
• 1.123.37
• 1.123.38
• 1.123.39
• 1.123.40
• 1.123.41
• 1.123.42
• 1.123.43
• 1.123.44
• 1.123.45
• 1.123.46
• 1.123.47
• 1.123.48
• 1.123.49
• 1.123.50
• 1.123.51
• 1.123.52
• 1.123.53
• 1.123.54
• 1.123.55
• 1.123.56
• 1.123.57
• 1.123.58
• 1.123.59
• 1.123.60
• 1.123.61
• 1.123.62
• 1.123.63
• 1.123.64
• 1.123.65
• 1.123.66
• 1.123.67
• 1.123.68
• 1.123.69
• 1.123.70
• 1.123.71
• 1.123.72
• 1.123.73
• 1.123.74
• 1.123.75
• 1.123.76
• 1.123.77
• 1.123.78
• 1.123.79
• 1.123.80
• 1.123.81
• 1.123.82
• 1.123.83
• 1.123.84
• 1.123.85
• 1.123.86
• 1.123.87
• 1.123.88
• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30
• 2.31
• 2.32
• 2.33
• 2.34
• 2.35
• 2.36
• 2.37
• 2.38
• 2.39
• 2.40
• 2.41
• 2.42
• 2.43
• 2.44
• 2.45
• 2.45.0
• 2.45.1
• 2.45.2
• 2.45.3
• 2.45.4
• 2.46.0
• 3.0

Website

• Product: https://github.com/n8n-io/n8n/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion