CVE-2026-86994 n8n: Cross-User Active Workflow ID and Lifecycle Event Disclosure via Missing userId Filter
An attacker can view active workflow IDs and lifecycle events belonging to other users due to missing authorization checks in the n8n platform.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-86994?
CVE-2026-86994 is a medium-severity vulnerability in N8n N8n, published on 8 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-86994?
6 open source packages ship an affected version, including n8n. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
n8n npm | All versions | 1.123.76 |
n8n npm | All versions | 1.123.76 |
n8n npm | From 2.0.0 | 2.37.7 |
n8n npm | From 2.0.0 | 2.37.7 |
n8n npm | From 2.38.0 | 2.38.2 |
n8n npm | From 2.38.0 | 2.38.2 |
Products include N8n N8n.
How do I fix CVE-2026-86994?
Upgrade n8n to a fixed version for your release line: 1.123.76, 2.37.7 or 2.38.2.
Is CVE-2026-86994 being exploited?
There is no known exploitation of CVE-2026-86994 in the wild and no public exploit code.
Other vulnerabilities in N8n N8n
- CVE-2025-68613 n8n Improper Control of Dynamically-Managed Code Resources
- CVE-2026-21877 n8n is vulnerable to Remote Code Execution via Arbitrary File Write
- CVE-2026-21858 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling
- CVE-2026-1470 n8n Unsafe Workflow Expression Evaluation Allows Remote Code Execution
- CVE-2025-68668 n8n Vulnerable to Arbitrary Command Execution in Pyodide based Python Code Node
Sources
Also known as GHSA-65xw-2v52-jhxc, MINI-87vv-f7p7-j8q3.