AWS cli documentation change

Service: cli · 2026-04-25 · Documentation low

File: cli/latest/reference/s3api/head-object.md

Summary

Updated CLI version reference from 2.34.34 to 2.34.37 and added documentation for new checksum response fields (ChecksumSHA512, ChecksumMD5, ChecksumXXHASH64, ChecksumXXHASH3, ChecksumXXHASH128) in the head-object command output.

Security assessment

The change adds documentation for additional checksum fields available in head-object responses, which supports data integrity verification without downloading the object. This enhances security documentation by documenting more checksum options, but there is no evidence of a specific security vulnerability being addressed. The change appears to be part of a broader feature rollout of additional checksum algorithms.

Diff

diff --git a/cli/latest/reference/s3api/head-object.md b/cli/latest/reference/s3api/head-object.md
index b3c7a915f..92f8aefe9 100644
--- a//cli/latest/reference/s3api/head-object.md
+++ b//cli/latest/reference/s3api/head-object.md
@@ -15 +15 @@
-  * [AWS CLI 2.34.34 Command Reference](../../index.html) »
+  * [AWS CLI 2.34.37 Command Reference](../../index.html) »
@@ -583,0 +584,20 @@ ChecksumSHA256 -> (string)
+ChecksumSHA512 -> (string)
+
+> The Base64 encoded, 512-bit `SHA512` digest of the object. For more information, see [Checking object integrity in the Amazon S3 User Guide](https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html) .
+
+ChecksumMD5 -> (string)
+
+> The Base64 encoded, 128-bit `MD5` digest of the object. For more information, see [Checking object integrity in the Amazon S3 User Guide](https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html) .
+
+ChecksumXXHASH64 -> (string)
+
+> The Base64 encoded, 64-bit `XXHASH64` checksum of the object. For more information, see [Checking object integrity in the Amazon S3 User Guide](https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html) .
+
+ChecksumXXHASH3 -> (string)
+
+> The Base64 encoded, 64-bit `XXHASH3` checksum of the object. For more information, see [Checking object integrity in the Amazon S3 User Guide](https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html) .
+
+ChecksumXXHASH128 -> (string)
+
+> The Base64 encoded, 128-bit `XXHASH128` checksum of the object. For more information, see [Checking object integrity in the Amazon S3 User Guide](https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html) .
+
@@ -840 +860 @@ ObjectLockLegalHoldStatus -> (string)
-  * [AWS CLI 2.34.34 Command Reference](../../index.html) »
+  * [AWS CLI 2.34.37 Command Reference](../../index.html) »