diff --git a/apps/dokploy/__test__/backups/redact-credentials.test.ts b/apps/dokploy/__test__/backups/redact-credentials.test.ts
new file mode 100644
index 0000000000..5fff508cc8
--- /dev/null
+++ b/apps/dokploy/__test__/backups/redact-credentials.test.ts
@@ -0,0 +1,50 @@
+import { redactRcloneCredentials } from "@dokploy/server/utils/backups/redact";
+import { describe, expect, it } from "vitest";
+
+describe("redactRcloneCredentials (#4621)", () => {
+	it("should redact access key in rclone command", () => {
+		const cmd =
+			'rclone rcat --s3-access-key-id="AKIAIOSFODNN7EXAMPLE" --s3-secret-access-key="wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY" :s3:bucket/file.gz';
+		const redacted = redactRcloneCredentials(cmd);
+		expect(redacted).not.toContain("AKIAIOSFODNN7EXAMPLE");
+		expect(redacted).toContain('--s3-access-key-id="[REDACTED]"');
+	});
+
+	it("should redact secret access key in rclone command", () => {
+		const cmd =
+			'rclone rcat --s3-access-key-id="key" --s3-secret-access-key="supersecret" :s3:bucket/file.gz';
+		const redacted = redactRcloneCredentials(cmd);
+		expect(redacted).not.toContain("supersecret");
+		expect(redacted).toContain('--s3-secret-access-key="[REDACTED]"');
+	});
+
+	it("should redact both credentials simultaneously", () => {
+		const cmd =
+			'rclone lsf --s3-access-key-id="AKIA123" --s3-secret-access-key="secret456" --s3-region="us-east-1" :s3:bucket/';
+		const redacted = redactRcloneCredentials(cmd);
+		expect(redacted).not.toContain("AKIA123");
+		expect(redacted).not.toContain("secret456");
+		expect(redacted).toContain('--s3-region="us-east-1"');
+	});
+
+	it("should not modify non-credential flags", () => {
+		const cmd =
+			'rclone rcat --s3-region="eu-west-1" --s3-endpoint="https://s3.example.com" --s3-no-check-bucket :s3:bucket/file.gz';
+		const redacted = redactRcloneCredentials(cmd);
+		expect(redacted).toBe(cmd);
+	});
+
+	it("should handle commands with no credentials", () => {
+		const cmd = "rclone lsf :s3:bucket/";
+		expect(redactRcloneCredentials(cmd)).toBe(cmd);
+	});
+
+	it("should handle error strings containing credentials", () => {
+		const errorStr =
+			'Error: Command failed: rclone lsf --s3-access-key-id="MYKEY" --s3-secret-access-key="MYSECRET" :s3:bucket/';
+		const redacted = redactRcloneCredentials(errorStr);
+		expect(redacted).not.toContain("MYKEY");
+		expect(redacted).not.toContain("MYSECRET");
+		expect(redacted).toContain("[REDACTED]");
+	});
+});
diff --git a/packages/server/src/utils/backups/index.ts b/packages/server/src/utils/backups/index.ts
index 8f0e0b6dd9..d0d3045587 100644
--- a/packages/server/src/utils/backups/index.ts
+++ b/packages/server/src/utils/backups/index.ts
@@ -11,6 +11,7 @@ import { startLogCleanup } from "../access-log/handler";
 import { cleanupAll } from "../docker/utils";
 import { sendDockerCleanupNotifications } from "../notifications/docker-cleanup";
 import { execAsync, execAsyncRemote } from "../process/execAsync";
+import { redactRcloneCredentials } from "./redact";
 import { getS3Credentials, normalizeS3Path, scheduleBackup } from "./utils";
 
 export const initCronJobs = async () => {
@@ -153,6 +154,6 @@ export const keepLatestNBackups = async (
 			await execAsync(rcloneCommand);
 		}
 	} catch (error) {
-		console.error(error);
+		console.error(redactRcloneCredentials(String(error)));
 	}
 };
diff --git a/packages/server/src/utils/backups/redact.ts b/packages/server/src/utils/backups/redact.ts
new file mode 100644
index 0000000000..065e76d8cd
--- /dev/null
+++ b/packages/server/src/utils/backups/redact.ts
@@ -0,0 +1,12 @@
+/**
+ * Redacts S3 credentials from rclone command strings.
+ *
+ * Used to prevent credential leakage in structured logs and error output.
+ * Matches the flag format produced by `getS3Credentials()`:
+ *   --s3-access-key-id="VALUE"  and  --s3-secret-access-key="VALUE"
+ */
+export const redactRcloneCredentials = (command: string): string => {
+	return command
+		.replace(/(--s3-access-key-id=)"[^"]*"/g, '$1"[REDACTED]"')
+		.replace(/(--s3-secret-access-key=)"[^"]*"/g, '$1"[REDACTED]"');
+};
diff --git a/packages/server/src/utils/backups/utils.ts b/packages/server/src/utils/backups/utils.ts
index 365ebff415..59e0450f93 100644
--- a/packages/server/src/utils/backups/utils.ts
+++ b/packages/server/src/utils/backups/utils.ts
@@ -9,6 +9,7 @@ import { runMariadbBackup } from "./mariadb";
 import { runMongoBackup } from "./mongo";
 import { runMySqlBackup } from "./mysql";
 import { runPostgresBackup } from "./postgres";
+import { redactRcloneCredentials } from "./redact";
 import { runWebServerBackup } from "./web-server";
 
 export const scheduleBackup = (backup: BackupSchedule) => {
@@ -262,7 +263,7 @@ export const getBackupCommand = (
 		{
 			containerSearch,
 			backupCommand,
-			rcloneCommand,
+			rcloneCommand: redactRcloneCredentials(rcloneCommand),
 			logPath,
 		},
 		`Executing backup command: ${backup.databaseType} ${backup.backupType}`,