CVE-2026-66007: Huggingface Datasets

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Datasets through 5.0.0, fixed in commit f989ef9, contains a path traversal vulnerability in folder-based dataset builders where the file_name metadata field is not properly validated before being joined to the dataset directory. Attackers can supply crafted file_name values with directory traversal sequences to read arbitrary local files, which are then embedded into output when save_to_disk or push_to_hub is called.

Affected products

• Huggingface Datasets: up to and including 5.0.0

Published 2026-07-24. Last modified 2026-08-17.