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Sunday, 13 September 2026
8 agent hacks today▲ 7 vs yesterday (1)
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Incident database

n8n and n8n-MCP flaws expose credentials and cross-tenant workflow backups

Three disclosed vulnerabilities in the n8n workflow automation ecosystem allowed AI Agents to bypass a credential's Allowed HTTP Request Domains restriction via an MCP tool pointed at an attacker-controlled URL (CVE-2026-59207), and let authenticated tenants in n8n-MCP multi-tenant HTTP mode read or delete other tenants' workflow version backups containing credential references and authorization headers (CVE-2026-54052, CVE-2026-55608). All issues were fixed in updated releases.

Disclosed 9 July 2026 · Record updated 13 September 2026

Impact

A member-level user with use-only access to a shared credential could exfiltrate that secret to an external server; authenticated tenants in n8n-MCP multi-tenant deployments could read, delete or destroy other tenants' workflow version snapshots including full node definitions, credential references and authorization headers.

Our coverage

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Sources

  1. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-59207
  2. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-54052
  3. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-55608