Is CVE-2026-103252 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-103252?

CVE-2026-103252 has a CVSS v3 severity of HIGH (7.7).

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CVE-2026-103252

Description

n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain an authorization bypass vulnerability in the credential test endpoint that resolves project-scoped variables without validating caller access. Attackers can specify an arbitrary project ID in the request body to interpolate sensitive variables into credential test requests sent to attacker-controlled hosts for exfiltration.