Title: Staging release – 2024/12/16 Author: WordPress VIP Documentation Published: December 16, 2024 Last modified: August 5, 2025 --- 1. [Changelog](https://docs.wpvip.com/changelog/) 2. [VIP MU plugins [Staging]](https://docs.wpvip.com/changelog/vip-mu-plugins-staging/) 3. Staging release – 2024/12/16 # Staging release – 2024/12/16 --- 16 December 2024 18:34:25 GMT+0000 [ VIP MU plugins [Staging] ](https://docs.wpvip.com/changelog/vip-mu-plugins-staging/) [ Permalink ](https://docs.wpvip.com/changelog/vip-mu-plugins-staging/staging-release-2024-12-16/) ### Added Introduced the `vip_files_acl_is_valid_path_for_site` filter to extend the `is_valid_path_for_site` function. This new filter allows overriding the VIP File System’s validation process for multisite setups, which uses the `/wp-content/mu-plugins/files/acl/endpoint- check-file-acl.php` endpoint to check permissions for paths under `/wp-content/uploads`. It enables custom use cases, such as accessing directories outside the default site asset paths (but within the uploads folder) while adhering to other ACL rules. **Warning:** Improper use of this filter could expose private data. Developers using it must ensure that the logic they implement enforces proper access control to prevent data leaks between subsites. [https://github.com/Automattic/vip-go-mu-plugins/pull/6033](https://github.com/Automattic/vip-go-mu-plugins/pull/6033)