What’s Vulnerable › Vulnerabilities

CVE-2025-52554: n8n Improper Authorization in Workflow Execution Stop Endpoint Allows Terminating Other Users’ Workflows

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-03 · updated 2026-06-17
• Weakness: CWE-862

Description

n8n is a workflow automation platform. Prior to version 1.99.1, an authorization vulnerability was discovered in the /rest/executions/:id/stop endpoint of n8n. An authenticated user can stop workflow executions that they do not own or that have not been shared with them, leading to potential business disruption. This issue has been patched in version 1.99.1. A workaround involves restricting access to the /rest/executions/:id/stop endpoint via reverse proxy or API gateway.

Affected products

• n8n-io n8n: before 1.99.1 — fixed in 1.99.1

How to fix

Upgrade to a fixed version: n8n-io n8n 1.99.1. Check the vendor advisory for mitigations.

References

• https://github.com/dudanogueira/n8n/commit/ca2f90c7fbaa1d661ade2f45d587d9469bc287e1
• https://github.com/n8n-io/n8n/commit/e5edc60e344924230baafb11fa1f0af788e9ca9a
• https://github.com/n8n-io/n8n/pull/16405
• https://github.com/n8n-io/n8n/security/advisories/GHSA-gq57-v332-7666

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