From 5f476db5c00aa49bf38da7b8f589e083eaef0dcb Mon Sep 17 00:00:00 2001
From: Alexander Zobnin <alexanderzobnin@gmail.com>
Date: Fri, 3 Feb 2023 12:30:12 +0100
Subject: [PATCH] Only fail if no signature present at all

---
 service_provider.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/service_provider.go b/service_provider.go
index c5e15c1a..14f2a114 100644
--- a/service_provider.go
+++ b/service_provider.go
@@ -1547,7 +1547,7 @@ func (sp *ServiceProvider) ValidateLogoutResponseRedirect(query url.Values) erro
 	}
 
 	if err := sp.validateSignature(doc.Root()); err != nil {
-		if err != errSignatureElementNotPresent && !hasValidSignature {
+		if err != errSignatureElementNotPresent || !hasValidSignature {
 			retErr.PrivateErr = err
 			return retErr
 		}