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AWS AmazonS3 medium security documentation change

Service: AmazonS3 · 2026-01-31 · Security-related medium

File: AmazonS3/latest/userguide/replication-troubleshoot.md

Summary

Added identical note about KMS permissions for cross-region replication of re-encrypted objects

Security assessment

Reiterates critical permissions requirements in troubleshooting context, preventing potential security operation failures. Concrete evidence in required kms permissions

Diff

diff --git a/AmazonS3/latest/userguide/replication-troubleshoot.md b/AmazonS3/latest/userguide/replication-troubleshoot.md
index 009f8eab4..5fb5e57f0 100644
--- a//AmazonS3/latest/userguide/replication-troubleshoot.md
+++ b//AmazonS3/latest/userguide/replication-troubleshoot.md
@@ -152,0 +153,4 @@ In addition to the permissions granted by the KMS key policy, the source account
+###### Important
+
+If you use S3 Batch Replication to replicate datasets cross region and your objects previously had their server-side encryption type updated from SSE-S3 to SSE-KMS, you may need additional permissions. On the source region bucket, you must have `kms:decrypt` permissions. Then, you will need the `kms:decrypt` and `kms:encrypt` permissions for the bucket in the destination region.
+