[java-idp-oidc] 01/02: Encode all parameter values with HTMLEncoder.encodeForHTMLAttribute.

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commit 00cf2dd0380d01f20b4c2bed297df3e2214b13bb
Author: Henri Mikkonen <henri.mikkonen at iki.fi>
AuthorDate: Thu Nov 5 15:42:49 2026 +0200

    Encode all parameter values with HTMLEncoder.encodeForHTMLAttribute.
---
 .../idp/plugin/oidc/op/encoding/impl/NimbusResponseEncoder.java         | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/idp-oidc-extension-impl/src/main/java/net/shibboleth/idp/plugin/oidc/op/encoding/impl/NimbusResponseEncoder.java b/idp-oidc-extension-impl/src/main/java/net/shibboleth/idp/plugin/oidc/op/encoding/impl/NimbusResponseEncoder.java
index 4116a391..72fa1deb 100644
--- a/idp-oidc-extension-impl/src/main/java/net/shibboleth/idp/plugin/oidc/op/encoding/impl/NimbusResponseEncoder.java
+++ b/idp-oidc-extension-impl/src/main/java/net/shibboleth/idp/plugin/oidc/op/encoding/impl/NimbusResponseEncoder.java
@@ -164,7 +164,7 @@ public class NimbusResponseEncoder extends AbstractHttpServletResponseMessageEnc
     private VelocityContext doPostEncode(@Nonnull final AuthorizationResponse message) {
         final VelocityContext context = new VelocityContext();
         for (final Entry<String, List<String>> entry : message.toParameters().entrySet()) {
-            context.put("parameter_" + entry.getKey(), entry.getValue().get(0));
+            context.put("parameter_" + entry.getKey(), HTMLEncoder.encodeForHTMLAttribute(entry.getValue().get(0)));
         }
         context.put("action", HTMLEncoder.encodeForHTMLAttribute(message.getRedirectionURI().toString()));
         if (cspDigester != null) {

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