CVE-2025-58753: copyparty: Sharing a single file does not fully restrict access to other files in source folder

September 9, 2025 (updated November 10, 2025)

There was a missing permission-check in the shares feature (the shr global-option).

When a share is created for just one file inside a folder, it was possible to access the other files inside that folder by guessing the filenames.

It was not possible to descend into subdirectories in this manner; only the sibling files were accessible.

This issue did not affect filekeys or dirkeys.

References

github.com/9001/copyparty
github.com/9001/copyparty/commit/e0a92ba72d46074209a9c304eb2a01ca0429e60c
github.com/9001/copyparty/releases/tag/v1.19.8
github.com/9001/copyparty/security/advisories/GHSA-pxvw-4w88-6x95
github.com/advisories/GHSA-pxvw-4w88-6x95
nvd.nist.gov/vuln/detail/CVE-2025-58753

Code Behaviors & Features

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