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Avoid NPE in FilterInvocation

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Handle unknown headers in dummy request wrapper.

Closes gh-12998
This commit is contained in:
Christian Marck
2023-03-23 07:59:59 +01:00
committed by Josh Cummings
parent e25117856e
commit 442faccb5f
2 changed files with 28 additions and 1 deletions
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7
web/src/main/java/org/springframework/security/web/FilterInvocation.java
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@@ -26,6 +26,7 @@ import java.lang.reflect.Proxy;
import java.util.Collections;
import java.util.Enumeration;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.FilterChain;
@@ -257,7 +258,11 @@ public class FilterInvocation {
@Override
public Enumeration<String> getHeaders(String name) {
return Collections.enumeration(this.headers.get(name));
List<String> headerList = this.headers.get(name);
if (headerList == null) {
return Collections.emptyEnumeration();
}
return Collections.enumeration(headerList);
}
@Override