Vulnerability · Published Aug 11, 2026 · Assigned by VulnCheck

CVE-2026-72763n8n before 1.123.67 Credential Exfiltration via Sub-Workflow

High 7.2

In plain English

A high-severity authorization bypass via user-controlled key in n8n from n8n-io. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)7.2High

Exploit odds (30 days)0.4%top 70.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

n8n before 1.123.67, 2.31.5, and 2.32.1 validates credential-access only for a node's top-level credentials and not for credentials referenced inside an Execute Sub-workflow node's inline workflow JSON. A member with Editor access to a shared workflow (when workflow sharing is enabled) who knows a target credential's ID can reference that credential in the inline JSON; it passes save-time and runtime validation and resolves in the parent workflow's project context, allowing the attacker to use or exfiltrate credentials they are not permitted to access.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	n8n	1.123.67	GHSA-cj9h-qx8g-pq2g
npm	n8n	2.32.1	GHSA-cj9h-qx8g-pq2g
npm	n8n	2.31.5	GHSA-cj9h-qx8g-pq2g

Affected products (as reported)

Vendor	Product	Versions
n8n-io	n8n	0 – before 1.123.67
n8n-io	n8n	2.32.0 – before 2.32.1
n8n-io	n8n	2.0.0-rc.0 – before 2.31.5

Weakness: CWE-639 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:L

References

GitHub Security Advisory (GHSA-cj9h-qx8g-pq2g) vendor-advisory
VulnCheck Advisory: n8n before 1.123.67 Credential Exfiltration via Sub-Workflow third-party-advisory