1.3.1

apple/container1.3.1Aug 29, 2026by github-actions[bot]

AI Summary

This patch release addresses a number of security vulnerabilities in the Containerization package and introduces a new 'container skill' feature while fixing tmpfs mount issues.

Key Highlights

Fixes multiple security vulnerabilities including file deletion, path traversal, symlink attacks, and registry authentication issues.
Adds a new 'container skill' feature to the project.
Fixes an issue where the tmpfs mount source field was left empty.

New Features

Add container skill
Fix tmpfs mount source field

Full Release Notes

This patch release addresses a number of security issues in the Containerization package:

- [GHSA-x7pf-2jmj-pgcq](https://github.com/apple/containerization/security/advisories/GHSA-x7pf-2jmj-pgcq) - Creating a container or executing a container process can delete files outside its bundle through an unchecked id
- [GHSA-f689-h8m7-3jp2](https://github.com/apple/containerization/security/advisories/GHSA-f689-h8m7-3jp2) - `ContainerizationOCI` accepts unvalidated OCI descriptor digests, enabling path traversal in the local content store
- [GHSA-r3h2-rgqf-9hv9](https://github.com/apple/containerization/security/advisories/GHSA-r3h2-rgqf-9hv9) - Loading an OCI image layout can read host files through a symlink
- [GHSA-mx96-5vvg-x2mg](https://github.com/apple/containerization/security/advisories/GHSA-mx96-5vvg-x2mg) - CVE-2026-65388 - `RegistryClient` follows the `WWW-Authenticate` realm without validating its host or scheme
- [GHSA-697p-8837-37h3](https://github.com/apple/containerization/security/advisories/GHSA-697p-8837-37h3) - Unpacking a crafted image layer with a long(invalid) file name crashes the unpacking process
- [GHSA-g3rx-2m58-rr63](https://github.com/apple/containerization/security/advisories/GHSA-g3rx-2m58-rr63) - Unpacking a crafted image layer with an invalid length extended-attribute name crashes the unpacking process

## What's Changed
* Add container skill by @crosbymichael in https://github.com/apple/container/pull/2154
* Fix tmpfs mount source field left empty for --mount type=tmpfs by @sivasath16 in https://github.com/apple/container/pull/2138
* Update to containerization 0.42.0 by @katiewasnothere in https://github.com/apple/container/pull/2207

## New Contributors
* @sivasath16 made their first contribution in https://github.com/apple/container/pull/2138

**Full Changelog**: https://github.com/apple/container/compare/1.3.0...1.3.1