Vulnerability · Published Sep 8, 2026 · Assigned by GitHub_M

CVE-2026-86994n8n: Cross-User Active Workflow ID and Lifecycle Event Disclosure via Missing userId Filter

Medium 5.3

In plain English

A medium-severity missing authorization 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 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)0.3%top 72.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the /rest/active-workflows endpoint returned every active workflow ID on the instance to any member regardless of sharing. Workflow activation, deactivation, and publication push events were also broadcast to clients that could not access the affected workflow, disclosing workflow IDs, version IDs, and activation error details. The affected paths include packages/cli/src/services/active-workflows.service.ts and packages/cli/src/workflows/workflow-push-notifier.service.ts. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	n8n	1.123.76	GHSA-65xw-2v52-jhxc
npm	n8n	2.38.2	GHSA-65xw-2v52-jhxc
npm	n8n	2.37.7	GHSA-65xw-2v52-jhxc

Affected products (as reported)

Vendor	Product	Versions
n8n-io	n8n	>= 2.38.0, < 2.38.2>= 2.0.0, < 2.37.7< 1.123.76

Weakness: CWE-862 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-65xw-2v52-jhxc x_refsource_CONFIRM
https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76 x_refsource_MISC
https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7 x_refsource_MISC
https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2 x_refsource_MISC