[java-plugin-shibd] branch main updated: Fix an index range issue operating on empty lists.

[Codeberg]

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codeberg pushed a commit to branch main
in repository java-plugin-shibd.

View the commit online:
https://codeberg.org/Shibboleth/java-plugin-shibd/commit/fbdc4811032308761a828866808ef8df1da3681f

The following commit(s) were added to refs/heads/main by this push:
     new fbdc481  Fix an index range issue operating on empty lists.
fbdc481 is described below

commit fbdc4811032308761a828866808ef8df1da3681f
Author: Scott Cantor <scott at restingparrotsoftware.com>
AuthorDate: Wed Aug 5 11:21:52 2026 -0400

    Fix an index range issue operating on empty lists.
---
 sp-server-api/src/main/java/net/shibboleth/sp/ddf/DDF.java | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sp-server-api/src/main/java/net/shibboleth/sp/ddf/DDF.java b/sp-server-api/src/main/java/net/shibboleth/sp/ddf/DDF.java
index afaaec6..abcf125 100644
--- a/sp-server-api/src/main/java/net/shibboleth/sp/ddf/DDF.java
+++ b/sp-server-api/src/main/java/net/shibboleth/sp/ddf/DDF.java
@@ -1042,7 +1042,11 @@ public class DDF implements Iterable<DDF> {
             } else if (current.islist()) {
                 // Access first element of list, don't advance the path.
                 assert current.value instanceof List;
-                current = ((List<DDF>) current.value).get(0);
+                final List<DDF> contents = (List<DDF>) current.value;
+                if (contents.isEmpty()) {
+                    return new DDF();
+                }
+                current = contents.get(0);
                 if (current == null) {
                     return new DDF();
                 }

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