CVE-2026-56778
n8n - Authorization Bypass in Public API Execution Retry Endpoint
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jul 8, 2026
- Updated
- Oct 29, 2026
- Reserved
- Jun 23, 2026
Description
n8n before 2.25.7 and 2.26.x before 2.26.2 contains an authorization bypass in the Public API execution retry endpoint, which authorizes access using the workflow:read scope instead of workflow:execute. An authenticated user with read-only access to a shared workflow can use the Public API to retry executions of that workflow, bypassing the intended permission boundary between read and execute access. This affects instances where workflows are shared with other users or across projects.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 6.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
n8nn8n |
|
n8nn8n |
|
References
- GitHub Security Advisory (GHSA-h3jj-5f3v-3685)vendor-advisory
- VulnCheck Advisory: n8n - Authorization Bypass in Public API Execution Retry Endpointthird-party-advisory
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