Is CVE-2026-27578 actively exploited?

No active exploitation of CVE-2026-27578 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-27578 be exploited remotely?

Yes. CVE-2026-27578 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-27578?

CVE-2026-27578 has a CVSS score of 5.4 (MEDIUM) and an EPSS exploitation probability of 0.03%.

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MEDIUM

CVE-2026-27578

CWE-79Published: February 25, 2026· Updated: Mar 4, 2026

5.4

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:10.2th

Official Description

n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, an authenticated user with permission to create or modify workflows could inject arbitrary scripts into pages rendered by the n8n application using different techniques on various nodes (Form Trigger node, Chat Trigger node, Send & Wait node, Webhook Node, and Chat Node). Scripts injected by a malicious workflow execute in the browser of any user who visits the affected page, enabling session hijacking and account takeover. The issues have been fixed in n8n versions 2.10.1 and 1.123.21. Users should upgrade to one of these versions or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations. Limit workflow creation and editing permissions to fully trusted users only, and/or disable the Webhook node by adding `n8n-nodes-base.webhook` to the `NODES_EXCLUDE` environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

NVD Source

Technical Analysis

CVE-2026-27578 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.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.