3 files changed, 9 insertions, 2 deletions

diff --git a/server/middlewares/validators/config.ts b/server/middlewares/validators/config.ts
index d015fa6fe..31b131914 100644
--- a/server/middlewares/validators/config.ts
+++ b/server/middlewares/validators/config.ts
@@ -1,10 +1,11 @@
 import * as express from 'express'
 import { body } from 'express-validator/check'
-import { isUserNSFWPolicyValid, isUserVideoQuotaValid, isUserVideoQuotaDailyValid } from '../../helpers/custom-validators/users'
+import { isUserNSFWPolicyValid, isUserVideoQuotaDailyValid, isUserVideoQuotaValid } from '../../helpers/custom-validators/users'
 import { logger } from '../../helpers/logger'
 import { CustomConfig } from '../../../shared/models/server/custom-config.model'
 import { Emailer } from '../../lib/emailer'
 import { areValidationErrors } from './utils'
+import { isThemeValid } from '../../helpers/custom-validators/plugins'
 
 const customConfigUpdateValidator = [
   body('instance.name').exists().withMessage('Should have a valid instance name'),
@@ -47,6 +48,8 @@ const customConfigUpdateValidator = [
   body('followers.instance.enabled').isBoolean().withMessage('Should have a valid followers of instance boolean'),
   body('followers.instance.manualApproval').isBoolean().withMessage('Should have a valid manual approval boolean'),
 
+  body('theme.default').custom(isThemeValid).withMessage('Should have a valid theme'),
+
   async (req: express.Request, res: express.Response, next: express.NextFunction) => {
     logger.debug('Checking customConfigUpdateValidator parameters', { parameters: req.body })
 
diff --git a/server/middlewares/validators/plugins.ts b/server/middlewares/validators/plugins.ts
index 672299ee1..fcb461624 100644
--- a/server/middlewares/validators/plugins.ts
+++ b/server/middlewares/validators/plugins.ts
@@ -16,7 +16,7 @@ const servePluginStaticDirectoryValidator = [
 
     if (areValidationErrors(req, res)) return
 
-    const plugin = PluginManager.Instance.getRegisteredPlugin(req.params.pluginName)
+    const plugin = PluginManager.Instance.getRegisteredPluginOrTheme(req.params.pluginName)
 
     if (!plugin || plugin.version !== req.params.pluginVersion) {
       return res.sendStatus(404)
diff --git a/server/middlewares/validators/users.ts b/server/middlewares/validators/users.ts
index 947ed36c3..df7f77b84 100644
--- a/server/middlewares/validators/users.ts
+++ b/server/middlewares/validators/users.ts
@@ -28,6 +28,7 @@ import { ActorModel } from '../../models/activitypub/actor'
 import { isActorPreferredUsernameValid } from '../../helpers/custom-validators/activitypub/actor'
 import { isVideoChannelNameValid } from '../../helpers/custom-validators/video-channels'
 import { UserRegister } from '../../../shared/models/users/user-register.model'
+import { isThemeValid } from '../../helpers/custom-validators/plugins'
 
 const usersAddValidator = [
   body('username').custom(isUserUsernameValid).withMessage('Should have a valid username (lowercase alphanumeric characters)'),
@@ -204,6 +205,9 @@ const usersUpdateMeValidator = [
   body('videosHistoryEnabled')
     .optional()
     .custom(isUserVideosHistoryEnabledValid).withMessage('Should have a valid videos history enabled attribute'),
+  body('theme')
+    .optional()
+    .custom(isThemeValid).withMessage('Should have a valid theme'),
 
   async (req: express.Request, res: express.Response, next: express.NextFunction) => {
     logger.debug('Checking usersUpdateMe parameters', { parameters: omit(req.body, 'password') })