CVE-2026-86994

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

State
Published
Severity
5.3 Medium
Published
Sep 8, 2026
Updated
Sep 9, 2026
Reserved
Sep 8, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
4.05.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:NGitHub_M

Weaknesses

Affected Products

ProductVersions
n8nn8n-io
  • >= 2.38.0, < 2.38.2Affected
  • >= 2.0.0, < 2.37.7Affected
  • < 1.123.76Affected

References

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