CVE-2026-126390
n8n before 1.123.89 NocoDB Node API Token Leak via Attachment Download
Description
n8n before 1.123.89 contains a credential leakage vulnerability in the NocoDB node that sends the configured NocoDB API token to attacker-chosen hosts when downloading attachments. Attackers with write access to a NocoDB attachment cell can insert a URL to their host, capturing the API token when the workflow executes with Download Attachments enabled.
INFO
Published Date :
Nov. 13, 2026, 10:17 a.m.
Last Modified :
Nov. 13, 2026, 10:17 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | LOW | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | LOW | MITRE-CVE | ||||
| CVSS 3.1 | LOW | [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.
- Review and restrict write access to NocoDB attachment cells.
- Disable workflow attachment downloads if possible.
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-2026-126390.
| URL | Resource |
|---|---|
| https://github.com/n8n-io/n8n/security/advisories/GHSA-jmcg-c7p5-q69g | |
| https://www.vulncheck.com/advisories/n8n-before-1.123.89-nocodb-node-api-token-leak-via-attachment-download |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-126390 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-2026-126390
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-2026-126390 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-126390 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.
-
New CVE Received by [email protected]
Nov. 13, 2026
Action Type Old Value New Value Added Description n8n before 1.123.89 contains a credential leakage vulnerability in the NocoDB node that sends the configured NocoDB API token to attacker-chosen hosts when downloading attachments. Attackers with write access to a NocoDB attachment cell can insert a URL to their host, capturing the API token when the workflow executes with Download Attachments enabled. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/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:N/UI:N/S:U/C:L/I:N/A:N Added CWE CWE-522 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/126xxx/CVE-2026-126390.json">CVE-2026-126390</a> Added Reference https://github.com/n8n-io/n8n/security/advisories/GHSA-jmcg-c7p5-q69g Added Reference https://www.vulncheck.com/advisories/n8n-before-1.123.89-nocodb-node-api-token-leak-via-attachment-download