AI agent vulnerability · n8n

GHSA-h3jj-5f3v-3685: n8n: Public API Execution Retry Authorization Bypass

mediumCVSS 4.0 5.3 · 3.1 6.4

Impact The Public API endpoint for retrying executions authorized access using workflow:read rather than workflow:execute. An authenticated user with read-only access to a shared workflow could use the Public API to retry executions of that workflow, bypassing the intended permission boundary between read and execute access. This issue affects instances where workflows are shared with other users or across projects.

Published Jun 16, 2026

Affected packages

n8n

Ecosystem: npm
Affected: >= 2.26.0, < 2.26.2
Fixed in: 2.26.2
Check: npm ls n8n

n8n

Ecosystem: npm
Affected: < 2.25.7
Fixed in: 2.25.7
Check: npm ls n8n

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Impact

The Public API endpoint for retrying executions authorized access using workflow:read rather than workflow:execute. An authenticated user with read-only access to a shared workflow could use the Public API to retry executions of that workflow, bypassing the intended permission boundary between read and execute access.

This issue affects instances where workflows are shared with other users or across projects.

Patches

The issue has been fixed in n8n versions 2.25.7, and 2.26.2. Users should upgrade to one of these versions or later to remediate the vulnerability.

Workarounds

If upgrading is not immediately possible, administrators should consider the following temporary mitigations:

Restrict workflow sharing to fully trusted users only.
Restrict network access to the n8n Public API to trusted users only.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Credited to ksw9722.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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