CVE-2026-126383
n8n before 1.123.89 NoSQL Injection via MongoDB Node Update Key
Description
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.
INFO
Published Date :
Nov. 13, 2026, 10:17 a.m.
Last Modified :
Nov. 13, 2026, 4:18 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update n8n to version 1.123.89 or later.
- Update n8n to version 2.45.5 or later.
- Update n8n to version 2.46.1 or later.
- Update n8n to version 3.0.1 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-126383.
| URL | Resource |
|---|---|
| https://github.com/n8n-io/n8n/security/advisories/GHSA-4v22-g448-h4rg | |
| https://www.vulncheck.com/advisories/n8n-before-1.123.89-nosql-injection-via-mongodb-node-update-key |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-126383 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-126383
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-126383 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-126383 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 13, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-126383', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-11-13T15:30:31.007922Z'} -
New CVE Received by [email protected]
Nov. 13, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H Added CWE CWE-943 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/126xxx/CVE-2026-126383.json">CVE-2026-126383</a> Added Reference https://github.com/n8n-io/n8n/security/advisories/GHSA-4v22-g448-h4rg Added Reference https://www.vulncheck.com/advisories/n8n-before-1.123.89-nosql-injection-via-mongodb-node-update-key