This should work against the standard source code in debian

roy
---
diff -urN sympa-6.2.70~dfsg-1/src/cgi/wwsympa.fcgi.in 
sympa-6.2.70~dfsg-2/src/cgi/wwsympa.fcgi.in
--- sympa-6.2.70~dfsg-1/src/cgi/wwsympa.fcgi.in 2025-01-08 15:09:05.000000000 
+0100
+++ sympa-6.2.70~dfsg-2/src/cgi/wwsympa.fcgi.in 2025-01-08 15:23:25.429883808 
+0100
@@ -3352,7 +3352,13 @@

         # If contacted via POST, then redirect the user to the URL for the
         # access control to apply.
-        if ($ENV{'REQUEST_METHOD'} eq 'POST') {
+        unless (
+            'GET' eq $ENV{REQUEST_METHOD}
+            and 0 == index(
+                $ENV{PATH_INFO} . '/',
+                "/sso_login/$in{'auth_service_name'}/"
+            )
+        ) {
             my @paths;
             my $service;

@@ -3431,7 +3437,8 @@
                 return 1;
             }

-            if (defined($in{'email'}) and !($in{'subaction'} eq 'init')) {
+            if (Sympa::Tools::Text::valid_email($in{'email'})
+                and $in{'subaction'} eq 'validateemail') {
                 $email = $in{'email'};
             }

@@ -3443,7 +3450,7 @@

                 ## Replace sendpassword with one time ticket
                 $param->{'one_time_ticket'} = Sympa::Ticket::create(
-                    $in{'email'},
+                    $email,
                     $robot,
                     'sso_login/confirmemail?auth_service_name='
                         . $in{'auth_service_name'},
@@ -3470,7 +3477,7 @@
                 # Check input parameters and verify ticket for email, stolen
                 # from do_login()
                 #
-                unless ($in{'email'}) {
+                unless (Sympa::Tools::Text::valid_email($in{'email'})) {
                     add_stash('user', 'no_email');
                     wwslog('info', 'No email');
                     web_db_log(
--
Roy Sigurd Karlsbakk
r...@karlsbakk.net
+47 9801 3356
--
I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er 
et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av 
idiomer med xenotyp etymologi. I de fleste tilfeller eksisterer adekvate og 
relevante synonymer på norsk.

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