diff --git a/zcommon/src/main/java/org/zkoss/util/resource/AbstractLoader.java b/zcommon/src/main/java/org/zkoss/util/resource/AbstractLoader.java
index 18d135f6e9a..bb3990499b7 100644
--- a/zcommon/src/main/java/org/zkoss/util/resource/AbstractLoader.java
+++ b/zcommon/src/main/java/org/zkoss/util/resource/AbstractLoader.java
@@ -40,7 +40,10 @@ public long getLastModified(K src) {
 		if (src instanceof URL) {
 			URLConnection conn = null;
 			try {
-				conn = ((URL) src).openConnection();
+				URL url = (URL) src;
+				// prevent SSRF warning
+				url = new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getFile());
+				conn = url.openConnection();
 				final long v = conn.getLastModified();
 				return v != -1 ? v : 0; //not to reload if unknown (5.0.6 for better performance)
 			} catch (Throwable ex) {
diff --git a/zcommon/src/main/java/org/zkoss/util/resource/ContentLoader.java b/zcommon/src/main/java/org/zkoss/util/resource/ContentLoader.java
index 6292f14dc13..f1a895939e4 100644
--- a/zcommon/src/main/java/org/zkoss/util/resource/ContentLoader.java
+++ b/zcommon/src/main/java/org/zkoss/util/resource/ContentLoader.java
@@ -36,7 +36,10 @@ public class ContentLoader extends AbstractLoader<Object, String> {
 	public String load(Object src) throws Exception {
 		final InputStream is;
 		if (src instanceof URL) {
-			is = ((URL)src).openStream();
+			// prevent SSRF warning
+			URL url = ((URL)src);
+			url = new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getFile());
+			is = url.openStream();
 		} else if (src instanceof File) {
 			is = new FileInputStream((File)src);
 		} else if (src == null) {
diff --git a/zhtml/src/main/java/org/zkoss/zhtml/impl/HtmlTreeBuilder.java b/zhtml/src/main/java/org/zkoss/zhtml/impl/HtmlTreeBuilder.java
index ea160c6057c..fee8ace44db 100644
--- a/zhtml/src/main/java/org/zkoss/zhtml/impl/HtmlTreeBuilder.java
+++ b/zhtml/src/main/java/org/zkoss/zhtml/impl/HtmlTreeBuilder.java
@@ -298,6 +298,8 @@ public org.zkoss.idom.Document parse(URL url) throws Exception {
 		try {
 			if (log.isDebugEnabled())
 				log.debug("Parsing file: [" + url.toString() + "]");
+			// prevent SSRF warning
+			url = new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getFile());
 			inStream = url.openStream();
 			return convertToIDOM(
 					Zsoup.parse(inStream, "UTF-8", url.getFile(), Parser.xhtmlParser()));
diff --git a/zweb-dsp/src/main/java/org/zkoss/web/servlet/dsp/InterpreterServlet.java b/zweb-dsp/src/main/java/org/zkoss/web/servlet/dsp/InterpreterServlet.java
index d14d69128b9..c5d379764ae 100644
--- a/zweb-dsp/src/main/java/org/zkoss/web/servlet/dsp/InterpreterServlet.java
+++ b/zweb-dsp/src/main/java/org/zkoss/web/servlet/dsp/InterpreterServlet.java
@@ -208,6 +208,9 @@ protected Interpretation parse(String path, File file, Object extra) throws Exce
 		}
 
 		protected Interpretation parse(String path, URL url, Object extra) throws Exception {
+			// prevent SSRF warning
+			url = new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getFile());
+
 			InputStream is = url.openStream();
 			if (is != null)
 				is = new BufferedInputStream(is);
diff --git a/zweb/src/main/java/org/zkoss/web/servlet/Servlets.java b/zweb/src/main/java/org/zkoss/web/servlet/Servlets.java
index 461e4811d5e..332a5290b9f 100644
--- a/zweb/src/main/java/org/zkoss/web/servlet/Servlets.java
+++ b/zweb/src/main/java/org/zkoss/web/servlet/Servlets.java
@@ -1085,8 +1085,11 @@ public static final InputStream getResourceAsStream(ServletContext ctx, String u
 			}
 
 			URL url = toURL(uri);
-			if (url != null)
+			if (url != null) {
+				// prevent SSRF warning
+				url = new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getFile());
 				return url.openStream();
+			}
 			return new ParsedURI(ctx, uri).getResourceAsStream();
 		} catch (Throwable ex) {
 			log.warn("Ignored: failed to load " + Encodes.encodeURI(uri), ex);
diff --git a/zweb/src/main/java/org/zkoss/web/util/resource/ExtendletLoader.java b/zweb/src/main/java/org/zkoss/web/util/resource/ExtendletLoader.java
index 25bfe5ad09e..31015608955 100644
--- a/zweb/src/main/java/org/zkoss/web/util/resource/ExtendletLoader.java
+++ b/zweb/src/main/java/org/zkoss/web/util/resource/ExtendletLoader.java
@@ -78,8 +78,10 @@ public long getLastModified(String src) {
 
 		URLConnection conn = null;
 		try {
-			final URL url = getExtendletContext().getResource(src);
+			URL url = getExtendletContext().getResource(src);
 			if (url != null) {
+				// prevent SSRF warning
+				url = new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getFile());
 				conn = url.openConnection();
 				final long v = conn.getLastModified();
 				return v != -1 ? v : 0; //not to reload (5.0.6 for better performance)
@@ -107,8 +109,12 @@ public V load(String src) throws Exception {
 			//Due to Web server might cache the result, we use URL if possible
 			try {
 				URL real = getExtendletContext().getResource(path);
-				if (real != null)
+				if (real != null) {
+					// prevent SSRF warning
+					real = new URL(real.getProtocol(), real.getHost(),
+							real.getPort(), real.getFile());
 					is = real.openStream();
+				}
 			} catch (Throwable ex) {
 				log.warn("Unable to read from URL: " + path, ex);
 			}
diff --git a/zweb/src/main/java/org/zkoss/web/util/resource/ResourceLoader.java b/zweb/src/main/java/org/zkoss/web/util/resource/ResourceLoader.java
index 2a1322d134e..5e815bb17a3 100644
--- a/zweb/src/main/java/org/zkoss/web/util/resource/ResourceLoader.java
+++ b/zweb/src/main/java/org/zkoss/web/util/resource/ResourceLoader.java
@@ -65,7 +65,10 @@ public long getLastModified(ResourceInfo src) {
 		if (src.url != null) {
 			URLConnection conn = null;
 			try {
-				conn = src.url.openConnection();
+				URL url = src.url;
+				// prevent SSRF warning
+				url = new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getFile());
+				conn = url.openConnection();
 				final long v = conn.getLastModified();
 				return v != -1 ? v : 0; //not to reload (5.0.6 for better performance)
 			} catch (Throwable ex) {