mountpoint-s3-1.23.0

gradio-app/fastrtcmountpoint-s3-1.23.0Jul 21, 2026by github-actions[bot]

AI Summary

This release introduces new security and performance features for Mountpoint S3, including custom certificate authority support, advanced checksum algorithms, and automatic content type detection, alongside critical bug fixes.

Key Highlights

  • Added `--ca-bundle` flag for trusting custom SSL certificates
  • Added support for CRC64NVME full-object checksums on uploads
  • Added automatic content type detection for file uploads
  • Fixed memory limiter ignoring container cgroup memory limits
  • Fixed credential resolution issues with STS Web Identity

New Features

  • Custom CA bundle support
  • CRC64NVME checksum support
  • Automatic content type inference
  • Enhanced FUSE operation debugging logs

Full Release Notes

* Add `--ca-bundle` flag (and `AWS_CA_BUNDLE` environment variable fallback) for trusting a custom certificate authority when Mountpoint makes HTTPS calls. ([#1834](https://github.com/awslabs/mountpoint-s3/pull/1834) by @yerzhan7)
* Add support for CRC64NVME full-object checksums on uploads. The `--upload-checksums` argument now accepts `crc64nvme` in addition to the existing `crc32c` and `off` values. CRC32C continues to use S3's composite (checksum-of-checksums) format on multipart uploads; CRC64NVME uses S3's `FULL_OBJECT` mode. Both algorithms work end-to-end on atomic and incremental upload paths. Note for downstream consumers: on multipart objects, `GetObjectAttributes` reports `ChecksumType: FULL_OBJECT` for CRC64NVME (vs. `COMPOSITE` for CRC32C), and the `x-amz-checksum-crc64nvme` header value is the full-object hash with no `-<part-count>` suffix. Tooling that strips the composite `-N` suffix or assumes `COMPOSITE` should branch on the algorithm. ([#1838](https://github.com/awslabs/mountpoint-s3/pull/1838) by @alecrubin)
* Add support for automatic content type detection on file uploads. When the `--infer-content-type` flag is specified, Mountpoint will infer the `Content-Type` of new objects based on their file extension instead of using the default `binary/octet-stream`. ([#1790](https://github.com/awslabs/mountpoint-s3/pull/1790) by @Zxilly)
* Fix credential resolution when using a source profile with STS Web Identity. ([#1889](https://github.com/awslabs/mountpoint-s3/pull/1889) by @passaro)
* Fix memory limiter ignoring container cgroup memory limits, which could cause out-of-memory issues in memory-constrained containers. ([#1806](https://github.com/awslabs/mountpoint-s3/pull/1806) by @yerzhan7)
* Reduce peak memory usage of incremental (append) uploads by removing an unnecessary buffer copy in the internal S3 client. ([#1882](https://github.com/awslabs/mountpoint-s3/pull/1882) by @yerzhan7)
* Add additional debug information to FUSE operation logs including the ID of the process triggering the file system operation. ([#1718](https://github.com/awslabs/mountpoint-s3/pull/1718) by @mansi153)

## Binaries
### x86_64
* RPM: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/x86_64/mount-s3-1.23.0-x86_64.rpm
* RPM signature: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/x86_64/mount-s3-1.23.0-x86_64.rpm.asc
* RPM (SUSE): https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/x86_64/mount-s3-1.23.0-x86_64.suse.rpm
* RPM (SUSE) signature: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/x86_64/mount-s3-1.23.0-x86_64.suse.rpm.asc
* DEB: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/x86_64/mount-s3-1.23.0-x86_64.deb
* DEB signature: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/x86_64/mount-s3-1.23.0-x86_64.deb.asc
* tar.gz: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/x86_64/mount-s3-1.23.0-x86_64.tar.gz
* tar.gz signature: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/x86_64/mount-s3-1.23.0-x86_64.tar.gz.asc
### arm64
* RPM: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/arm64/mount-s3-1.23.0-arm64.rpm
* RPM signature: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/arm64/mount-s3-1.23.0-arm64.rpm.asc
* RPM (SUSE): https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/arm64/mount-s3-1.23.0-arm64.suse.rpm
* RPM (SUSE) signature: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/arm64/mount-s3-1.23.0-arm64.suse.rpm.asc
* DEB: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/arm64/mount-s3-1.23.0-arm64.deb
* DEB signature: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/arm64/mount-s3-1.23.0-arm64.deb.asc
* tar.gz: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/arm64/mount-s3-1.23.0-arm64.tar.gz
* tar.gz signature: https://s3.amazonaws.com/mountpoint-s3-release/1.23.0/arm64/mount-s3-1.23.0-arm64.tar.gz.asc