{"items":[{"id":"NVI-00016063","kind":"vulnerability","title":"n8n: SSRF Protection Bypass via MCP Client Node","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-vhf8-cg2h-cg3p"],"plain_summary":"GitHub lists this reviewed advisory for n8n, n8n. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-13ecf3ea6c944ecc7ec91dc110928d5c"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-13ecf3ea6c944ecc7ec91dc110928d5c","url":"https://github.com/advisories/GHSA-vhf8-cg2h-cg3p","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-vhf8-cg2h-cg3p","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T17:42:43.803Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-13ecf3ea6c944ecc7ec91dc110928d5c"],"technology":"n8n","known_exclusions":[],"conditions_summary":"## Impact\n\nOn an n8n instance with SSRF protection enabled, the MCP Client node sent requests to a user-supplied endpoint without routing them through that protection and without pinning the resolved address. An authenticated user who could create or edit a workflow could therefore cause the server to connect to internal or otherwise blocked hosts and read the responses back through the workflow, exposing internal services the SSRF protection was meant to protect.\n\n## Patches\n\nThe issue has been fixed in n8n versions 2.31.5 and 2.32.1. Users should upgrade to one of these versions or later to remediate the vulnerability.\n\n## Workarounds\n\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Restrict n8n instance access to fully trusted users only.\n- Disable the MCP Client node by adding it to the `NODES_EXCLUDE` environment variable.\n- Restrict network egress from the n8n host to block access to internal and link-local address ranges at the network level.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","public_affected_ranges":[">= 2.32.0, < 2.32.1"]},{"certainty":"source_listed","source_ids":["sr-13ecf3ea6c944ecc7ec91dc110928d5c"],"technology":"n8n","known_exclusions":[],"conditions_summary":"## Impact\n\nOn an n8n instance with SSRF protection enabled, the MCP Client node sent requests to a user-supplied endpoint without routing them through that protection and without pinning the resolved address. An authenticated user who could create or edit a workflow could therefore cause the server to connect to internal or otherwise blocked hosts and read the responses back through the workflow, exposing internal services the SSRF protection was meant to protect.\n\n## Patches\n\nThe issue has been fixed in n8n versions 2.31.5 and 2.32.1. Users should upgrade to one of these versions or later to remediate the vulnerability.\n\n## Workarounds\n\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Restrict n8n instance access to fully trusted users only.\n- Disable the MCP Client node by adding it to the `NODES_EXCLUDE` environment variable.\n- Restrict network egress from the n8n host to block access to internal and link-local address ranges at the network level.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","public_affected_ranges":["< 2.31.5"]}],"null_published_at":"2026-11-04T10:04:27.874Z","source_updated_at":"2026-07-22T22:07:05.000Z","source_disclosed_at":"2026-07-22T22:07:04.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-03T17:42:43.803Z"}],"next_cursor":null,"snapshot_revision":"42594"}