Merge branch '6.3.x'

Closes gh-15768

Author: marcusdacoregio

core/src/main/java/org/springframework/security/jackson2/SecurityJackson2Modules.java

@@ -75,7 +75,6 @@ public final class SecurityJackson2Modules {
 
 	private static final List<String> securityJackson2ModuleClasses = Arrays.asList(
 			"org.springframework.security.jackson2.CoreJackson2Module",
-			"org.springframework.security.cas.jackson2.CasJackson2Module",
 			"org.springframework.security.web.jackson2.WebJackson2Module",
 			"org.springframework.security.web.server.jackson2.WebServerJackson2Module");
 
@@ -89,6 +88,8 @@ public final class SecurityJackson2Modules {
 
 	private static final String saml2Jackson2ModuleClass = "org.springframework.security.saml2.jackson2.Saml2Jackson2Module";
 
+	private static final String casJackson2ModuleClass = "org.springframework.security.cas.jackson2.CasJackson2Module";
+
 	private static final boolean webServletPresent;
 
 	private static final boolean oauth2ClientPresent;
@@ -99,6 +100,8 @@ public final class SecurityJackson2Modules {
 
 	private static final boolean saml2JacksonPresent;
 
+	private static final boolean casJacksonPresent;
+
 	static {
 		ClassLoader classLoader = SecurityJackson2Modules.class.getClassLoader();
 		webServletPresent = ClassUtils.isPresent("jakarta.servlet.http.Cookie", classLoader);
@@ -107,6 +110,7 @@ public final class SecurityJackson2Modules {
 		javaTimeJacksonPresent = ClassUtils.isPresent(javaTimeJackson2ModuleClass, classLoader);
 		ldapJacksonPresent = ClassUtils.isPresent(ldapJackson2ModuleClass, classLoader);
 		saml2JacksonPresent = ClassUtils.isPresent(saml2Jackson2ModuleClass, classLoader);
+		casJacksonPresent = ClassUtils.isPresent(casJackson2ModuleClass, classLoader);
 	}
 
 	private SecurityJackson2Modules() {
@@ -160,6 +164,9 @@ public static List<Module> getModules(ClassLoader loader) {
 		if (saml2JacksonPresent) {
 			addToModulesList(loader, modules, saml2Jackson2ModuleClass);
 		}
+		if (casJacksonPresent) {
+			addToModulesList(loader, modules, casJackson2ModuleClass);
+		}
 		return modules;
 	}