feat(core): Allow customizing max file size in form-data payloads for webhooks (#10857)

packages/@n8n/config/src/configs/endpoints.config.ts

@@ -65,6 +65,10 @@ export class EndpointsConfig {
 	@Env('N8N_PAYLOAD_SIZE_MAX')
 	payloadSizeMax: number = 16;
 
+	/** Max payload size for files in form-data webhook payloads in MiB */
+	@Env('N8N_FORMDATA_FILE_SIZE_MAX')
+	formDataFileSizeMax: number = 200;
+
 	@Nested
 	metrics: PrometheusMetricsConfig;
 

packages/@n8n/config/test/config.test.ts

@@ -176,6 +176,7 @@ describe('GlobalConfig', () => {
 			formTest: 'form-test',
 			formWaiting: 'form-waiting',
 			payloadSizeMax: 16,
+			formDataFileSizeMax: 200,
 			rest: 'rest',
 			webhook: 'webhook',
 			webhookTest: 'webhook-test',