diff --git a/Resources/config/packages/univ_lorraine_symfony_cas.yaml b/Resources/config/packages/univ_lorraine_symfony_cas.yaml
index 82d300a..e690d18 100644
--- a/Resources/config/packages/univ_lorraine_symfony_cas.yaml
+++ b/Resources/config/packages/univ_lorraine_symfony_cas.yaml
@@ -7,4 +7,4 @@ univ_lorraine_symfony_cas:
   cas_login_redirect: / # optional (default: /)
   cas_logout_redirect: ~ # optional (must be a public area)
   cas_version: "3.0" # optional (default: 2.0)
-
+  public_access_regex : ~ # a regex that match publicly accessible URLs but give user if authenticated
diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index 0d98328..61a83c7 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -66,6 +66,11 @@ public function getConfigTreeBuilder(): TreeBuilder
                     ->example('2.0')
                     ->info('Version of the CAS Server.')
                 ->end()
+                ->scalarNode('public_access_regex')
+                    ->defaultValue('')
+                    ->example('#^/(public|other/(sub1|sub2))$#')
+                    ->info('a regex that match publicly accessible URLs but give user if authenticated')
+                ->end()
             ->end()
         ;
 
diff --git a/src/Security/CasAuthenticator.php b/src/Security/CasAuthenticator.php
index 9097b4f..0571747 100644
--- a/src/Security/CasAuthenticator.php
+++ b/src/Security/CasAuthenticator.php
@@ -51,6 +51,11 @@ public function start(Request $request, AuthenticationException $authException =
      */
     public function supports(Request $request): ?bool
     {
+        if ($this->casService->public_access_regex
+            && preg_match($this->casService->public_access_regex, $request->getRequestUri())) {
+            return false;
+        }
+
         // If user already connected, skip the CAS auth
         return !$this->security->getUser();
     }
diff --git a/src/Services/CasAuthenticationService.php b/src/Services/CasAuthenticationService.php
index 607c038..f1e8f56 100644
--- a/src/Services/CasAuthenticationService.php
+++ b/src/Services/CasAuthenticationService.php
@@ -16,7 +16,7 @@ class CasAuthenticationService
     private string $cas_login_redirect;
     private string $cas_logout_redirect;
     private string $cas_version;
-
+    public string $public_access_regex;
 
     public function __construct(array $config, string $env)
     {
@@ -28,6 +28,7 @@ public function __construct(array $config, string $env)
         $this->cas_login_redirect =  ltrim($config['cas_login_redirect'], '/\\');
         $this->cas_logout_redirect = $config['cas_logout_redirect'] ?: '';
         $this->cas_version = $config['cas_version'];
+        $this->public_access_regex = $config['public_access_regex'] ?: '';
         $this->env = $env;
     }