Merge pull request #4605 from aws/downgrade_jackson

Downgrade Jackson to 2.18.5

Author: alextwoods

.changes/2.40.13.json

@@ -2,6 +2,12 @@
     "version": "2.40.13",
     "date": "2025-12-19",
     "entries": [
+        {
+            "type": "bugfix",
+            "category": "AWS SDK for Java v2",
+            "contributor": "",
+            "description": "Downgrade Jackson and Jackson JR to 2.18.5 to address parsing errors in large strings."
+        },
         {
             "type": "bugfix",
             "category": "AWS SDK for Java v2",

CHANGELOG.md

@@ -16,6 +16,7 @@
     - Fix credential reloading in defaults when shared credential/config files are modified.
     - Gracefully handle missing file in ProfileFileSupplier.reloadWhenModified.
     - Optimize endpoint rule standard functions
+    - Downgrade Jackson and Jackson JR to 2.18.5 to address parsing errors in large strings.
 
 ## __AWS Wickr Admin API__
   - ### Features

pom.xml

@@ -105,9 +105,9 @@
         <awsjavasdk.version>${project.version}</awsjavasdk.version>
         <awsjavasdk.previous.version>2.40.12</awsjavasdk.previous.version>
         <awsjavasdk.previous-previous.version>2.40.11</awsjavasdk.previous-previous.version>
-        <jackson.version>2.19.4</jackson.version>
-        <jackson.databind.version>2.19.4</jackson.databind.version>
-        <jacksonjr.version>2.19.4</jacksonjr.version>
+        <jackson.version>2.18.5</jackson.version>
+        <jackson.databind.version>2.18.5</jackson.databind.version>
+        <jacksonjr.version>2.18.5</jacksonjr.version>
         <eventstream.version>1.0.1</eventstream.version>
         <commons.lang.version>3.14.0</commons.lang.version>
         <wiremock.version>2.32.0</wiremock.version>