{"id":"CVE-2026-103252","published":"2026-10-01T11:17:19.160","lastModified":"2026-10-01T14:17:21.020","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.","cvssScore":7.7,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","cwes":["CWE-639"],"vendors":[],"products":[],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-7gvh-q9w3-wqqx","tags":[]},{"url":"https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-information-disclosure-via-credential-test-endpoint","tags":[]}],"exploitRefs":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-7gvh-q9w3-wqqx","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows attackers to bypass authorization and interpolate sensitive variables in credential test requests, potentially leading to data exfiltration.","exploitability":"Exploitation is moderately hard as it requires attackers to specify an arbitrary project ID, but preconditions include access to the credential test endpoint.","blast_radius":"If exploited, this could lead to significant data loss or exposure of sensitive information within the affected projects.","remediation":"Upgrade to n8n version 1.123.80 or later, 2.39.6 or later, or 2.40.1 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["auth-bypass","data-exfiltration","web"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-09T08:45:15.507Z"}}