diff --git a/application/src/main/java/run/halo/app/theme/config/ThemeWebFluxConfigurer.java b/application/src/main/java/run/halo/app/theme/config/ThemeWebFluxConfigurer.java
index e066be10d..bcdb9eaa7 100644
--- a/application/src/main/java/run/halo/app/theme/config/ThemeWebFluxConfigurer.java
+++ b/application/src/main/java/run/halo/app/theme/config/ThemeWebFluxConfigurer.java
@@ -80,6 +80,9 @@ public class ThemeWebFluxConfigurer implements WebFluxConfigurer {
             var assetsPath = themeRoot.resolve(themeName + "/templates/assets/" + resourcePaths);
             FileUtils.checkDirectoryTraversal(themeRoot, assetsPath);
             var location = new FileSystemResource(assetsPath);
+            if (!location.isReadable()) {
+                return Mono.empty();
+            }
             return Mono.just(location);
         }
 
diff --git a/application/src/test/java/run/halo/app/config/WebFluxConfigTest.java b/application/src/test/java/run/halo/app/config/WebFluxConfigTest.java
index 2aeec5cab..e60e2870c 100644
--- a/application/src/test/java/run/halo/app/config/WebFluxConfigTest.java
+++ b/application/src/test/java/run/halo/app/config/WebFluxConfigTest.java
@@ -144,4 +144,14 @@ class WebFluxConfigTest {
         }
     }
 
+    @Nested
+    class StaticResourcesTest {
+
+        @Test
+        void shouldRespond404WhenThemeResourceNotFound() {
+            webClient.get().uri("/themes/fake-theme/assets/favicon.ico")
+                .exchange()
+                .expectStatus().isNotFound();
+        }
+    }
 }
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