CVE-2026-56778

Medium

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.

SeverityMedium

CVSS6.4

Exploit probability22. percentile0.3%

Product

N8n

PublishedJul 8, 2026

First seenJul 8, 2026

Weakness typeCWE-863Incorrect authorization

How to fix

Update

n8n n8n2.25.7, 2.26.2 or later
n8n2.26.2, 2.25.7 or later

Vendor advisories

github.com/n8n-io/n8n/security/advisories/GHSA-h3jj-5f3v-3685

Affected products

Product	Affected versions	Fixed in
n8n n8n	v < 2.25.7, 2.26.0 ≤ v < 2.26.2	2.25.7, 2.26.2
n8nnpm	2.26.0 ≤ v < 2.26.2, v < 2.25.7	2.26.2, 2.25.7

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