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rmaucher pushed a commit to branch 11.0.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git


The following commit(s) were added to refs/heads/11.0.x by this push:
     new 735d927d39 Fix possible EL argument mismatch when it was set to null
735d927d39 is described below

commit 735d927d39de0ee3a6194f4a02c9a2af39ae268a
Author: remm <[email protected]>
AuthorDate: Wed May 20 09:20:32 2026 +0200

    Fix possible EL argument mismatch when it was set to null
---
 java/jakarta/el/ELContext.java | 2 +-
 webapps/docs/changelog.xml     | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/java/jakarta/el/ELContext.java b/java/jakarta/el/ELContext.java
index d0f7e4adbe..5577fe3ef9 100644
--- a/java/jakarta/el/ELContext.java
+++ b/java/jakarta/el/ELContext.java
@@ -312,7 +312,7 @@ public abstract class ELContext {
     public Object getLambdaArgument(String name) {
         for (Map<String,Object> arguments : getLambdaArguments()) {
             Object result = arguments.get(name);
-            if (result != null) {
+            if (result != null || arguments.containsKey(name)) {
                 return result;
             }
         }
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index c63dc6e9a0..a8a3953ffb 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -167,6 +167,9 @@
       <fix>
         Fix EL standalone interface bean properties discovery. (remm)
       </fix>
+      <fix>
+        Fix possible EL argument mismatch when it was set to null. (remm)
+      </fix>
     </changelog>
   </subsection>
   <subsection name="Cluster">


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