CVE-2026-103246

Description

n8n versions before 2.39.6 and 2.40.0 before 2.40.1 fail to validate credential ownership during inline agent node-tool introspection. Attackers can reference arbitrary credential IDs to decrypt and exfiltrate plaintext secrets to attacker-controlled hosts without ownership verification.

CVSS Vector

References

• https://github.com/n8n-io/n8n/security/advisories/GHSA-9rhv-fhr8-7q5r
• https://www.vulncheck.com/advisories/n8n-before-2.39.6-and-2.40-x-before-2.40.1-credential-disclosure-via-node-tool-introspection