{"action":"Upgrade n8n-mcp to 2.56.1 or later.","affected":[{"fixed":"2.56.1","introduced":"0"}],"component":"n8n-mcp","cve_ids":["CVE-2026-54052"],"ecosystem":"npm","epss":0.00388,"exploited":false,"fixed_versions":["2.56.1"],"ghsa_id":"GHSA-j6r7-6fhx-77wx","id":"tcs_01M5KFX724NCA1RF26SB3S1T3W","modified_at":"2026-07-14T19:31:05.637802Z","published_at":"2026-07-14T19:07:14Z","references":["https://osv.dev/vulnerability/GHSA-j6r7-6fhx-77wx","https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-j6r7-6fhx-77wx","https://github.com/czlonkowski/n8n-mcp","https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.56.1"],"severity":{"label":"critical","score":9.9},"sources":[{"source":"osv","source_id":"GHSA-j6r7-6fhx-77wx","url":"https://osv.dev/vulnerability/GHSA-j6r7-6fhx-77wx"}],"summary":"n8n-MCP: Cross-tenant access to workflow version backups in multi-tenant HTTP deployments"}