diff --git a/cli/package-lock.json b/cli/package-lock.json
index d564d1c28c..4a839dd9e5 100644
--- a/cli/package-lock.json
+++ b/cli/package-lock.json
@@ -3810,6 +3810,15 @@
         "get-func-name": "^2.0.1"
       }
     },
+    "node_modules/lru-cache": {
+      "version": "10.2.0",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-10.2.0.tgz",
+      "integrity": "sha512-2bIM8x+VAf6JT4bKAljS1qUWgMsqZRPGJS6FSahIMPVvctcNhyVp7AJu7quxOW9jwkryBReKZY5tY5JYv2n/7Q==",
+      "dev": true,
+      "engines": {
+        "node": "14 || >=16.14"
+      }
+    },
     "node_modules/magic-string": {
       "version": "0.30.5",
       "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.5.tgz",
@@ -4182,15 +4191,6 @@
         "url": "https://github.com/sponsors/isaacs"
       }
     },
-    "node_modules/path-scurry/node_modules/lru-cache": {
-      "version": "10.0.1",
-      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-10.0.1.tgz",
-      "integrity": "sha512-IJ4uwUTi2qCccrioU6g9g/5rvvVl13bsdczUUcqbciD9iLr095yj8DQKdObriEvuNSx325N1rV1O0sJFszx75g==",
-      "dev": true,
-      "engines": {
-        "node": "14 || >=16.14"
-      }
-    },
     "node_modules/path-type": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/path-type/-/path-type-4.0.0.tgz",
@@ -8566,6 +8566,12 @@
         "get-func-name": "^2.0.1"
       }
     },
+    "lru-cache": {
+      "version": "10.2.0",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-10.2.0.tgz",
+      "integrity": "sha512-2bIM8x+VAf6JT4bKAljS1qUWgMsqZRPGJS6FSahIMPVvctcNhyVp7AJu7quxOW9jwkryBReKZY5tY5JYv2n/7Q==",
+      "dev": true
+    },
     "magic-string": {
       "version": "0.30.5",
       "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.5.tgz",
@@ -8834,14 +8840,6 @@
       "requires": {
         "lru-cache": "^9.1.1 || ^10.0.0",
         "minipass": "^5.0.0 || ^6.0.2 || ^7.0.0"
-      },
-      "dependencies": {
-        "lru-cache": {
-          "version": "10.0.1",
-          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-10.0.1.tgz",
-          "integrity": "sha512-IJ4uwUTi2qCccrioU6g9g/5rvvVl13bsdczUUcqbciD9iLr095yj8DQKdObriEvuNSx325N1rV1O0sJFszx75g==",
-          "dev": true
-        }
       }
     },
     "path-type": {
diff --git a/cli/src/commands/base-command.ts b/cli/src/commands/base-command.ts
index 9218da6026..30da229418 100644
--- a/cli/src/commands/base-command.ts
+++ b/cli/src/commands/base-command.ts
@@ -8,11 +8,11 @@ export abstract class BaseCommand {
   protected user!: UserResponseDto;
   protected serverVersion!: ServerVersionResponseDto;
 
-  constructor(options: { config?: string }) {
-    if (!options.config) {
+  constructor(options: { configDirectory?: string }) {
+    if (!options.configDirectory) {
       throw new Error('Config directory is required');
     }
-    this.sessionService = new SessionService(options.config);
+    this.sessionService = new SessionService(options.configDirectory);
   }
 
   public async connect(): Promise<void> {
diff --git a/cli/src/services/session.service.ts b/cli/src/services/session.service.ts
index 05df2ec6e3..940cc94d25 100644
--- a/cli/src/services/session.service.ts
+++ b/cli/src/services/session.service.ts
@@ -82,7 +82,7 @@ export class SessionService {
       }
     }
 
-    await writeFile(this.authPath, yaml.stringify({ instanceUrl, apiKey }));
+    await writeFile(this.authPath, yaml.stringify({ instanceUrl, apiKey }), { mode: 0o600 });
 
     console.log('Wrote auth info to ' + this.authPath);
 
diff --git a/cli/test/cli-test-utils.ts b/cli/test/cli-test-utils.ts
index 405b7794df..cce81c5ffd 100644
--- a/cli/test/cli-test-utils.ts
+++ b/cli/test/cli-test-utils.ts
@@ -7,7 +7,7 @@ export const TEST_AUTH_FILE = path.join(TEST_CONFIG_DIR, 'auth.yml');
 export const TEST_IMMICH_INSTANCE_URL = 'https://test/api';
 export const TEST_IMMICH_API_KEY = 'pNussssKSYo5WasdgalvKJ1n9kdvaasdfbluPg';
 
-export const CLI_BASE_OPTIONS = { config: TEST_CONFIG_DIR };
+export const CLI_BASE_OPTIONS = { configDirectory: TEST_CONFIG_DIR };
 
 export const setup = async () => {
   const api = new ImmichApi(process.env.IMMICH_INSTANCE_URL as string, '');
diff --git a/cli/test/e2e/login-key.e2e-spec.ts b/cli/test/e2e/login-key.e2e-spec.ts
index 8b215def75..b2c2dcacbb 100644
--- a/cli/test/e2e/login-key.e2e-spec.ts
+++ b/cli/test/e2e/login-key.e2e-spec.ts
@@ -1,6 +1,8 @@
 import { restoreTempFolder, testApp } from '@test-utils';
-import { CLI_BASE_OPTIONS, setup, spyOnConsole } from 'test/cli-test-utils';
+import { CLI_BASE_OPTIONS, TEST_AUTH_FILE, deleteAuthFile, setup, spyOnConsole } from 'test/cli-test-utils';
+import { readFile, stat } from 'node:fs/promises';
 import { LoginCommand } from '../../src/commands/login';
+import yaml from 'yaml';
 
 describe(`login-key (e2e)`, () => {
   let apiKey: string;
@@ -20,6 +22,7 @@ describe(`login-key (e2e)`, () => {
   afterAll(async () => {
     await testApp.teardown();
     await restoreTempFolder();
+    deleteAuthFile();
   });
 
   beforeEach(async () => {
@@ -28,6 +31,8 @@ describe(`login-key (e2e)`, () => {
 
     const api = await setup();
     apiKey = api.apiKey;
+
+    deleteAuthFile();
   });
 
   it('should error when providing an invalid API key', async () => {
@@ -39,4 +44,23 @@ describe(`login-key (e2e)`, () => {
   it('should log in when providing the correct API key', async () => {
     await new LoginCommand(CLI_BASE_OPTIONS).run(instanceUrl, apiKey);
   });
+
+  it('should create an auth file when logging in', async () => {
+    await new LoginCommand(CLI_BASE_OPTIONS).run(instanceUrl, apiKey);
+
+    const data: string = await readFile(TEST_AUTH_FILE, 'utf8');
+    const parsedConfig = yaml.parse(data);
+
+    expect(parsedConfig).toEqual(expect.objectContaining({ instanceUrl, apiKey }));
+  });
+
+  it('should create an auth file with chmod 600', async () => {
+    await new LoginCommand(CLI_BASE_OPTIONS).run(instanceUrl, apiKey);
+
+    const stats = await stat(TEST_AUTH_FILE);
+
+    const mode = (stats.mode & 0o777).toString(8);
+
+    expect(mode).toEqual('600');
+  });
 });