diff --git a/extensions/package-manager/locale/en.yml b/extensions/package-manager/locale/en.yml
index 54d93e731f..2299616681 100755
--- a/extensions/package-manager/locale/en.yml
+++ b/extensions/package-manager/locale/en.yml
@@ -161,3 +161,23 @@ flarum-extension-manager:
 
     why_not_modal:
       title: Why Won't it Update
+
+  validation:
+    attributes:
+      minimum_stability: minimum stability
+      repositories: repositories
+      repositories.*: repositories
+      repositories.*.type: repository type
+      repositories.*.url: repository URL
+      extension_id: extension ID
+      update_mode: update mode
+      package: package
+      version: version
+      github_oauth: GitHub OAuth
+      github_oauth.*: GitHub OAuth
+      gitlab_oauth: GitLab OAuth
+      gitlab_oauth.*: GitLab OAuth
+      gitlab_token: GitLab Token
+      gitlab_token.*: GitLab Token
+      bearer: HTTP Bearer
+      bearer.*: HTTP Bearer
diff --git a/extensions/suspend/locale/en.yml b/extensions/suspend/locale/en.yml
index 495c28d5f3..d9c9254a48 100644
--- a/extensions/suspend/locale/en.yml
+++ b/extensions/suspend/locale/en.yml
@@ -69,3 +69,7 @@ flarum-suspend:
         You have been unsuspended. You can head back to the forum by clicking on the following link:
 
         {forum_url}
+
+  validation:
+    attributes:
+      suspendedUntil: suspended until
diff --git a/extensions/tags/locale/en.yml b/extensions/tags/locale/en.yml
index bb44b2a73a..3f93b6ba19 100644
--- a/extensions/tags/locale/en.yml
+++ b/extensions/tags/locale/en.yml
@@ -127,3 +127,13 @@ flarum-tags:
     choose_tags_placeholder: "{count, plural, one {Choose 1 more tag} other {Choose # more tags}}"
     name: Name
     tags: Tags
+
+  validation:
+    attributes:
+      name: name
+      slug: slug
+      is_hidden: hidden
+      description: description
+      color: color
+      tag_count_primary: => validation.attributes.tag_count_primary
+      tag_count_secondary: => validation.attributes.tag_count_secondary
diff --git a/framework/core/locale/validation.yml b/framework/core/locale/validation.yml
index 934d1739d2..b1737c455e 100644
--- a/framework/core/locale/validation.yml
+++ b/framework/core/locale/validation.yml
@@ -79,6 +79,7 @@ validation:
   present: "The :attribute field must be present."
   regex: "The :attribute format is invalid."
   required: "The :attribute field is required."
+  required_array_keys: "The :attribute array must contain entries for: :values."
   required_if: "The :attribute field is required when :other is :value."
   required_unless: "The :attribute field is required unless :other is in :values."
   required_with: "The :attribute field is required when :values is present."
diff --git a/framework/core/src/Extension/Extension.php b/framework/core/src/Extension/Extension.php
index 8cccbd3007..f3cbb51db6 100644
--- a/framework/core/src/Extension/Extension.php
+++ b/framework/core/src/Extension/Extension.php
@@ -333,6 +333,19 @@ public function getTitle()
         return $this->composerJsonAttribute('extra.flarum-extension.title');
     }
 
+    /**
+     * @return string|null
+     */
+    public function getNamespace(): ?string
+    {
+        return Collection::make($this->composerJsonAttribute('autoload.psr-4'))
+            ->filter(function ($source) {
+                return $source === 'src/';
+            })
+            ->keys()
+            ->first();
+    }
+
     /**
      * @return string
      */
diff --git a/framework/core/src/Foundation/AbstractValidator.php b/framework/core/src/Foundation/AbstractValidator.php
index 5629213aa8..5c0690b8ad 100644
--- a/framework/core/src/Foundation/AbstractValidator.php
+++ b/framework/core/src/Foundation/AbstractValidator.php
@@ -9,6 +9,7 @@
 
 namespace Flarum\Foundation;
 
+use Illuminate\Contracts\Cache\Store as Cache;
 use Illuminate\Support\Arr;
 use Illuminate\Validation\Factory;
 use Illuminate\Validation\ValidationException;
@@ -16,6 +17,13 @@
 
 abstract class AbstractValidator
 {
+    use ExtensionIdTrait;
+
+    /**
+     * @var string
+     */
+    public static $CORE_VALIDATION_CACHE_KEY = 'core.validation.extension_id_class_names';
+
     /**
      * @var array
      */
@@ -81,6 +89,30 @@ protected function getMessages()
         return [];
     }
 
+    /**
+     * @return array
+     */
+    protected function getAttributeNames()
+    {
+        $cache = resolve(Cache::class);
+
+        if ($cache->get(self::$CORE_VALIDATION_CACHE_KEY) !== null) {
+            return $cache->get(self::$CORE_VALIDATION_CACHE_KEY);
+        }
+
+        $extId = $this->getClassExtensionId();
+        $attributeNames = [];
+
+        foreach (array_keys($this->rules) as $attribute) {
+            $key = $extId ? "$extId.validation.attributes.$attribute" : "validation.attributes.$attribute";
+            $attributeNames[$attribute] = $this->translator->trans($key);
+        }
+
+        $cache->forever(self::$CORE_VALIDATION_CACHE_KEY, $attributeNames);
+
+        return $attributeNames;
+    }
+
     /**
      * Make a new validator instance for this model.
      *
@@ -92,6 +124,7 @@ protected function makeValidator(array $attributes)
         $rules = Arr::only($this->getRules(), array_keys($attributes));
 
         $validator = $this->validator->make($attributes, $rules, $this->getMessages());
+        $validator->setAttributeNames($this->getAttributeNames());
 
         foreach ($this->configuration as $callable) {
             $callable($this, $validator);
diff --git a/framework/core/src/Foundation/ExtensionIdTrait.php b/framework/core/src/Foundation/ExtensionIdTrait.php
new file mode 100644
index 0000000000..7e2bde4e5d
--- /dev/null
+++ b/framework/core/src/Foundation/ExtensionIdTrait.php
@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Flarum\Foundation;
+
+use Flarum\Extension\Extension;
+use Flarum\Extension\ExtensionManager;
+
+trait ExtensionIdTrait
+{
+    protected function getClassExtensionId(): ?string
+    {
+        $extensions = resolve(ExtensionManager::class);
+
+        return $extensions->getExtensions()
+                ->mapWithKeys(function (Extension $extension) {
+                    return [$extension->getId() => $extension->getNamespace()];
+                })
+                ->filter(function ($namespace) {
+                    return $namespace && str_starts_with(static::class, $namespace);
+                })
+                ->keys()
+                ->first();
+    }
+}