diff --git a/src/org/labkey/test/pages/core/admin/CustomizeSitePage.java b/src/org/labkey/test/pages/core/admin/CustomizeSitePage.java
index fa03ecc82f..2660ee999c 100644
--- a/src/org/labkey/test/pages/core/admin/CustomizeSitePage.java
+++ b/src/org/labkey/test/pages/core/admin/CustomizeSitePage.java
@@ -111,6 +111,12 @@ public CustomizeSitePage setMaxBLOBSize(String value)
         return this;
     }
 
+    public CustomizeSitePage setReadOnlyHttpRequestTimeout(String value)
+    {
+        elementCache().readOnlyHttpRequestTimeout.set(value);
+        return this;
+    }
+
     public CustomizeSitePage setExt3Required(boolean enable)
     {
         elementCache().ext3Required.set(enable);
@@ -247,6 +253,7 @@ protected RadioButton exceptionReportingLevel(ReportingLevel level)
         // System Properties
         protected final Input memoryUsageDumpInterval = Input(Locator.id("memoryUsageDumpInterval"), getDriver()).findWhenNeeded(this);
         protected final Input maxBLOBSize = Input(Locator.id("maxBLOBSize"), getDriver()).findWhenNeeded(this);
+        protected final Input readOnlyHttpRequestTimeout = Input(Locator.id("readOnlyHttpRequestTimeout"), getDriver()).findWhenNeeded(this);
         protected final Checkbox ext3Required = Checkbox(Locator.id("ext3Required")).findWhenNeeded(this);
         protected final Checkbox ext3APIRequired = Checkbox(Locator.id("ext3APIRequired")).findWhenNeeded(this);
 
diff --git a/src/org/labkey/test/tests/AdminConsoleTest.java b/src/org/labkey/test/tests/AdminConsoleTest.java
index d692fce1bb..04429468af 100644
--- a/src/org/labkey/test/tests/AdminConsoleTest.java
+++ b/src/org/labkey/test/tests/AdminConsoleTest.java
@@ -113,6 +113,33 @@ private String getServerHeader()
             throw new RuntimeException("Failed to get Server HTTP response header", e);
         }
     }
+
+    @Test
+    public void testBogusSiteSettings()
+    {
+        // Issue 53562: Cap max BLOB size
+        CustomizeSitePage customizeSitePage = goToAdminConsole().clickSiteSettings();
+        customizeSitePage.setMaxBLOBSize(Integer.toString(200 * 1024 * 1024 + 1));
+        customizeSitePage.setSslPort("-4");
+        customizeSitePage.setMemoryUsageDumpInterval("-3");
+        customizeSitePage.setReadOnlyHttpRequestTimeout("-1");
+        customizeSitePage.save();
+        assertTextPresent(
+            "Maximum BLOB size cannot be set higher than 209715200 bytes",
+            "HTTPS port must be between 1 and 65,535",
+            "Memory logging frequency must be non-negative",
+            "HTTP timeout must be non-negative"
+        );
+
+        customizeSitePage = new CustomizeSitePage(getDriver());
+        customizeSitePage.setMaxBLOBSize("-10");
+        customizeSitePage.setSslPort(Integer.toString(256 * 256)); // 2^16
+        customizeSitePage.save();
+        assertTextPresent(
+            "Maximum BLOB size cannot be negative",
+            "HTTPS port must be between 1 and 65,535"
+        );
+    }
     
     @Test
     public void testRibbonBar()