CVE-2026-86993: n8n

Medium severity, CVSS 4.9. EPSS: 0.5% chance of exploitation in the next 30 days.

n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, a Log Streaming event destination could reference a generic HTTP credential and decrypt whichever credential ID it named without an ownership check. A user with a custom global role carrying Log Streaming scopes could select a credential belonging to another project and send its decrypted secret to an attacker-controlled endpoint. The affected authorization boundary is packages/cli/src/modules/log-streaming.ee/destinations/destination-credentials-access.ts and the credential:read scope. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.

Affected products

• n8n n8n: before 1.123.76 (fixed in 1.123.76); from 2.0.0, before 2.37.7 (fixed in 2.37.7); from 2.38.0, before 2.38.2 (fixed in 2.38.2)

Published 2026-09-08. Last modified 2026-09-10.