CVE-2026-86994CWE-862broken-access-control

CVE-2026-86994

Medium · published September 9, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
26.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
5.3 · 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
EPSS
0.00342 · 26.5th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-09-09T02:19Z
Affected products (3)
ProductVersionsFixed in
n8n/n8n< 1.123.761.123.76
n8n/n8n≥ 2.0.0, < 2.37.72.37.7
n8n/n8n≥ 2.38.0, < 2.38.22.38.2
References (4)
EPSS history
Timeline
  • 10 SEP 03:18Z
    EPSS moved — → 0%
    epss
  • 08 SEP 21:18Z
    n8n: Cross-User Active Workflow ID and Lifecycle Event Disclosure via Missing userId Filter
    cvelistv5