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


The following commit(s) were added to refs/heads/main by this push:
     new f026789cd8 Skip BOM when serving UTF-32 files
f026789cd8 is described below

commit f026789cd88eb06d9fdc0c9dcc6b0f885b14e73b
Author: remm <[email protected]>
AuthorDate: Mon May 25 21:04:32 2026 +0200

    Skip BOM when serving UTF-32 files
---
 java/org/apache/catalina/servlets/DefaultServlet.java | 2 ++
 webapps/docs/changelog.xml                            | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/java/org/apache/catalina/servlets/DefaultServlet.java 
b/java/org/apache/catalina/servlets/DefaultServlet.java
index 7a8b22ec96..3523545948 100644
--- a/java/org/apache/catalina/servlets/DefaultServlet.java
+++ b/java/org/apache/catalina/servlets/DefaultServlet.java
@@ -1313,9 +1313,11 @@ public class DefaultServlet extends HttpServlet {
         // Look for 4-byte BOMs
         int b3 = bom[3] & 0xFF;
         if (b0 == 0x00 && b1 == 0x00 && b2 == 0xFE && b3 == 0xFF) {
+            skip(is, 4, stripBom);
             return Charset.forName("UTF-32BE");
         }
         if (b0 == 0xFF && b1 == 0xFE && b2 == 0x00 && b3 == 0x00) {
+            skip(is, 4, stripBom);
             return Charset.forName("UTF-32LE");
         }
 
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index 478bd9f56d..d8c8831b67 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -283,6 +283,9 @@
         Inaccurate session exipration statistics when using the persistent
         manager. (remm)
       </fix>
+      <fix>
+        Skip BOM when serving files with UTF-32 encoding. (remm)
+      </fix>
     </changelog>
   </subsection>
   <subsection name="Coyote">


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