Is CVE-2026-56776 actively exploited?

No active exploitation of CVE-2026-56776 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-56776 be exploited remotely?

Yes. CVE-2026-56776 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-56776?

CVE-2026-56776 has a CVSS score of 7.4 (HIGH).

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HIGH

CVE-2026-56776

CWE-863Published: July 8, 2026· Updated: Jul 9, 2026

7.4

CVSS v3.1

EPSS:0.16%probability of exploitation in 30 daysPercentile:5.7th

Official Description

n8n before 1.123.55, 2.25.7, and 2.26.2 contains an authorization bypass in the POST /workflows/{workflowId}/test-runs/new endpoint, which authorizes access using the workflow:read scope instead of workflow:execute. An authenticated user with read-only access to a workflow can trigger a real evaluation test run, causing the workflow to execute via the internal workflow runner and resulting in unintended outbound API calls, data mutations, or other side effects in connected downstream systems. The issue primarily affects instances using the Evaluations feature where RBAC project roles grant workflow:read without workflow:execute.

NVD Source

Technical Analysis

CVE-2026-56776 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.