MEDIUMVulnerability
CVE-2026-85166
n8n before 2.35.4 and 2.36.x before 2.36.2 does not validate credential references in the inline workflow JSON of nodes that execute an inline sub-workflow (e.g., the Workflow Tool node). A shared-workflow editor, or any user creating/updating a workflow via the REST API, Public API, or MCP, can persist a node referencing a credential they do not own. When the workflow is later executed under an identity that holds the credential, the inline sub-workflow resolves the secret and can send it to an attacker-controlled endpoint, resulting in credential exfiltration.
Properties
- severity
- MEDIUM
- score
- 6.5
- epss_score
- 0.00209
- cve_id
- CVE-2026-85166
- signal_observed_at
- 2026-09-15T21:12:51+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- published_at
- 2026-09-03T13:06:23.867
- last_modified
- 2026-09-10T19:54:12.750
- epss_percentile
- 0.11176
Related Entities (4)
ENRICHED_BY (1)
→[Source]FIRST EPSS
AFFECTS_PRODUCT (1)
→[Product]
HAS_WEAKNESS (1)
→[Weakness]Incorrect Authorization
DESCRIBED_BY (1)
→[Source]NVD
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