Fix redaction of objects with circular structure

.changeset/smooth-wasps-smash.md

@@ -0,0 +1,5 @@
+---
+"@directus/api": patch
+---
+
+Fixed redaction of objects with circular structure

api/src/utils/redact-object.test.ts

@@ -183,6 +183,24 @@ describe('getReplacer tests', () => {
 		}
 	});
 
+	test('Correctly parses object with circular structure when used with JSON.stringify()', () => {
+		const obj: Record<string, any> = {
+			a: 'foo',
+		};
+
+		obj['b'] = obj;
+		obj['c'] = { obj };
+
+		const expectedResult = {
+			a: 'foo',
+			c: {},
+		};
+
+		const result = JSON.parse(JSON.stringify(obj, getReplacer(getRedactedString)));
+
+		expect(result).toStrictEqual(expectedResult);
+	});
+
 	test('Correctly parses error object when used with JSON.stringify()', () => {
 		const errorMessage = 'Error Message';
 		const errorCause = 'Error Cause';

api/src/utils/redact-object.ts

@@ -111,7 +111,18 @@ export function getReplacer(replacement: Replacement, values?: Values) {
 		? Object.entries(values).filter(([_k, v]) => typeof v === 'string' && v.length > 0)
 		: [];
 
+	const seen = new WeakSet();
+
 	return (_key: string, value: unknown) => {
+		// Skip circular values
+		if (typeof value === 'object' && value !== null) {
+			if (seen.has(value)) {
+				return;
+			}
+
+			seen.add(value);
+		}
+
 		if (value instanceof Error) {
 			return {
 				name: value.name,