CVE-2026-110853

High

Description

n8n before 1.123.83 contains an authorization bypass vulnerability that allows authenticated members to spoof workflow identity by supplying a trusted identifier in Execute Sub-workflow inline JSON mode. Attackers can set this identifier to resolve credentials from projects they do not belong to and modify another workflow's static data and error-workflow dispatch.

SeverityHigh

CVSS7.1

Exploit probability—

ProductN8n

PublishedOct 14, 2026

First seenOct 14, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

n8n-io n8n1.123.83 or later

Vendor advisories

github.com/n8n-io/n8n/security/advisories/GHSA-866p-xg8v-g2q7

Affected products

Product	Affected versions	Fixed in
n8n-io n8n	v < 1.123.83	1.123.83

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