CVE-2026-126383
n8n before 1.123.89 NoSQL Injection via MongoDB Node Update Key
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-943 |
| Vendor | n8n-io |
| Product | n8n |
| Published | Nov 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
High
Affected Versions
n8n-io / n8n
0 < 1.123.89
n8n-io / n8n
2.46.0 < 2.46.1
n8n-io / n8n
2.0.0 < 2.45.5
n8n-io / n8n
3.0.0 < 3.0.1
References
Credits
🔍 Masofgon