MEDIUMVulnerability
CVE-2026-77073
n8n versions before 2.34.1 contain a credential validation bypass in the MCP create_workflow_from_code tool when authentication type is set to an expression. Attackers with a valid MCP Bearer API key and knowledge of a target credential ID can persist unauthorized cross-project credential references on workflows in different projects.
Properties
- severity
- MEDIUM
- score
- 4.3
- epss_score
- 0.00201
- cve_id
- CVE-2026-77073
- vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- published_at
- 2026-08-20T12:16:38.613
- last_modified
- 2026-09-01T19:14:15.463
- epss_percentile
- 0.09992
Related Entities (5)
ENRICHED_BY (1)
→[Source]FIRST EPSS
HAS_WEAKNESS (1)
→[Weakness]Authorization Bypass Through User-Controlled Key
DESCRIBED_BY (1)
→[Source]NVD
AFFECTS_PRODUCT (2)
→[Product]
→[Product]
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