diff --git a/Jenkinsfile b/Jenkinsfile
index 6e8c8b2b..d8d60af5 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,4 +1,8 @@
 buildPlugin(useContainerAgent: true,
-           // Opt-in to the Artifact Caching Proxy, to be removed when it will be in opt-out.
-            // See https://github.com/jenkins-infra/helpdesk/issues/2752 for more details and updates.
-            artifactCachingProxyEnabled: true)
+    // Opt-in to the Artifact Caching Proxy, to be removed when it will be in opt-out.
+    // See https://github.com/jenkins-infra/helpdesk/issues/2752 for more details and updates.
+    artifactCachingProxyEnabled: true,
+    configurations: [
+    	[platform: 'linux', jdk: 17],
+    	[platform: 'windows', jdk: 11],
+    ])
diff --git a/pom.xml b/pom.xml
index a4e82fc4..d582935f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
   <parent>
     <groupId>org.jenkins-ci.plugins</groupId>
     <artifactId>plugin</artifactId>
-    <version>4.51</version>
+    <version>4.78</version>
     <relativePath />
   </parent>
 
@@ -11,7 +11,7 @@
     <revision>2.7</revision>
     <changelist>-SNAPSHOT</changelist>
     <gitHubRepo>jenkinsci/oic-auth-plugin</gitHubRepo>
-    <jenkins.version>2.346.1</jenkins.version>
+    <jenkins.version>2.361</jenkins.version>
     <spotbugs.failOnError>true</spotbugs.failOnError>
     <spotbugs.effort>Max</spotbugs.effort>
     <configuration-as-code.version>1569.vb_72405b_80249</configuration-as-code.version>
diff --git a/src/main/java/org/jenkinsci/plugins/oic/OicSecurityRealm.java b/src/main/java/org/jenkinsci/plugins/oic/OicSecurityRealm.java
index 4db90324..193f7ecc 100644
--- a/src/main/java/org/jenkinsci/plugins/oic/OicSecurityRealm.java
+++ b/src/main/java/org/jenkinsci/plugins/oic/OicSecurityRealm.java
@@ -62,6 +62,7 @@
 import java.io.UnsupportedEncodingException;
 import java.lang.reflect.Field;
 import java.net.MalformedURLException;
+import java.net.URI;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.nio.charset.Charset;
@@ -734,7 +735,7 @@ protected String getValidRedirectUrl(String url) {
         if (url != null && !url.isEmpty()) {
             // Check if the URL is relative and starts with a slash
             if (url.startsWith("/")) {
-                return getRootUrl() + url; // Convert to absolute URL
+                return URI.create(getRootUrl() + url).normalize().toString();
             }
             // If not relative, then check if it's a valid absolute URL
             try {
diff --git a/src/test/java/org/jenkinsci/plugins/oic/EscapeHatchCrumbExclusionTest.java b/src/test/java/org/jenkinsci/plugins/oic/EscapeHatchCrumbExclusionTest.java
index 1330a3b7..3d8d97e1 100644
--- a/src/test/java/org/jenkinsci/plugins/oic/EscapeHatchCrumbExclusionTest.java
+++ b/src/test/java/org/jenkinsci/plugins/oic/EscapeHatchCrumbExclusionTest.java
@@ -19,6 +19,15 @@ public class EscapeHatchCrumbExclusionTest {
 
     private FilterChain chain = null;
 
+    private Request newRequestWithPath(String requestPath) {
+        return new Request(null, null) {
+            @Override
+            public String getPathInfo() {
+                return requestPath;
+            }
+        };
+    }
+
     @Test
     public void process_WithNullPath() throws IOException, ServletException {
         Request request = new Request(null, null);
@@ -27,8 +36,7 @@ public void process_WithNullPath() throws IOException, ServletException {
 
     @Test
     public void process_WithWrongPath() throws IOException, ServletException {
-        Request request = new Request(null, null);
-        request.setPathInfo("fictionalPath");
+        Request request = newRequestWithPath("fictionalPath");
         assertFalse(crumb.process(request, response, chain));
     }
 
@@ -41,8 +49,7 @@ public void doFilter(ServletRequest arg0, ServletResponse arg1) throws IOExcepti
             }
         };
 
-        Request request = new Request(null, null);
-        request.setPathInfo("/securityRealm/escapeHatch");
+        Request request = newRequestWithPath("/securityRealm/escapeHatch");
         assertTrue(crumb.process(request, response, chain));
     }
 }
diff --git a/src/test/java/org/jenkinsci/plugins/oic/OicSecurityRealmTest.java b/src/test/java/org/jenkinsci/plugins/oic/OicSecurityRealmTest.java
index 58d6996e..35542238 100644
--- a/src/test/java/org/jenkinsci/plugins/oic/OicSecurityRealmTest.java
+++ b/src/test/java/org/jenkinsci/plugins/oic/OicSecurityRealmTest.java
@@ -4,8 +4,6 @@
 import com.github.tomakehurst.wiremock.junit.WireMockRule;
 import hudson.util.Secret;
 import java.io.IOException;
-import java.net.MalformedURLException;
-
 import org.acegisecurity.AuthenticationManager;
 import org.acegisecurity.BadCredentialsException;
 import org.acegisecurity.GrantedAuthority;
@@ -18,7 +16,6 @@
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertThrows;
 
 public class OicSecurityRealmTest {
 
@@ -89,7 +86,7 @@ public void testShouldSetNullClientSecretWhenSecretIsNone() throws IOException {
 
     @Test
     public void testGetValidRedirectUrl() throws IOException {
-        String rootUrl = "http://localhost:" + wireMockRule.port() + "/jenkins/";
+        String rootUrl = jenkinsRule.jenkins.getRootUrl();
 
         TestRealm realm = new TestRealm.Builder(wireMockRule)
                 .WithMinimalDefaults().build();
@@ -97,6 +94,16 @@ public void testGetValidRedirectUrl() throws IOException {
         assertEquals(rootUrl + "bar", realm.getValidRedirectUrl(rootUrl + "bar"));
         assertEquals(rootUrl, realm.getValidRedirectUrl(null));
         assertEquals(rootUrl, realm.getValidRedirectUrl(""));
-        assertThrows(MalformedURLException.class, () -> realm.getValidRedirectUrl("foobar"));
+        assertEquals(rootUrl, realm.getValidRedirectUrl("foobar"));
+    }
+
+    @Test
+    public void testShouldReturnRootUrlWhenRedirectUrlIsInvalid() throws IOException {
+        String rootUrl = jenkinsRule.jenkins.getRootUrl();
+
+        TestRealm realm = new TestRealm.Builder(wireMockRule)
+                .WithMinimalDefaults().build();
+        assertEquals(rootUrl, realm.getValidRedirectUrl("foobar"));
+        assertEquals(rootUrl, realm.getValidRedirectUrl("https://another-host/"));
     }
 }