# CVE-2026-56778: n8n - Authorization Bypass in Public API Execution Retry Endpoint

> CVE-2026-56778: n8n - Authorization Bypass in Public API Execution Retry Endpoint. CVSS 6.4 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-56778
Last updated: 2026-10-25T20:10:00Z

- Published: 2026-07-08 13:49 UTC · Updated: 2026-10-25 20:10 UTC · Assigner: VulnCheck
- CVSS: 6.4 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- EPSS: 0.30%, 22th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-863

## 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.

## Affected vendors and products

- n8n: n8n

## Tracked companies

- [n8n](https://rewindex.com/company/n8n.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-56778)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-56778)
- [https://github.com/n8n-io/n8n/security/advisories/GHSA-h3jj-5f3v-3685](https://github.com/n8n-io/n8n/security/advisories/GHSA-h3jj-5f3v-3685)
- [https://www.vulncheck.com/advisories/n8n-authorization-bypass-in-public-api-execution-retry-endpoint](https://www.vulncheck.com/advisories/n8n-authorization-bypass-in-public-api-execution-retry-endpoint)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-56778 · Markdown: https://rewindex.com/cve/CVE-2026-56778.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-56778 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:13:12.612Z