CVE-2026-66007 huggingface CVE debrief

Who should care

Organizations using Hugging Face's Datasets library, particularly those using folder-based dataset builders, should be aware of this vulnerability and take steps to mitigate it. They should review and update affected datasets to prevent path traversal attacks and monitor for suspicious activity related to Datasets library usage. Additionally, organizations should prioritize patching to prevent potential path traversal attacks and review compensating controls for exposed systems while remediation is scheduled and verified. Security teams should track exceptions, retest remediated assets, and close the item only after evidence is documented. This may involve coordinating with affected product owners, reviewing relevant monitoring and detection logs, and verifying the effectiveness of mitigations. By taking these steps, organizations can reduce the risk associated with this vulnerability and protect their systems from potential attacks. The CVE record and NVD entry provide details on the path traversal vulnerability in Hugging Face's Datasets library. The vulnerability is due to improper validation of the file_name metadata field in folder-based dataset builders. The CVE record was published on 2026-07-24T15:19:07.493Z and has not been modified since then. The vulnerability can be mitigated by applying the patch from commit f989ef9. Organizations should verify their deployments and review affected datasets to prevent path traversal attacks. Security teams should review and update affected datasets to prevent path traversal attacks and monitor for suspicious activity related to Datasets library usage. Additionally, organizations should prioritize patching to prevent potential path traversal attacks and review compensating controls for exposed systems while remediation is scheduled and verified. Security teams should track exceptions, retest remediated assets, and close the item only after evidence is documented. This may involve coordinating with affected product owners, reviewing relevant monitoring and detection logs, and verifying the effectiveness of mitigations. By taking these steps, organizations can reduce the risk associated with this vulnerability and pro

Technical summary

The Datasets library through version 5.0.0 contains a path traversal vulnerability in folder-based dataset builders. The vulnerability is due to improper validation of the file_name metadata field, which can be exploited to read arbitrary local files. The vulnerability can be mitigated by applying the patch from commit f989ef9b4cc6c0039a7a82458eebca49e2b58b4b. This patch addresses the vulnerability by properly validating the file_name metadata field.

Defensive priority

Organizations using Hugging Face's Datasets library should prioritize patching to prevent potential path traversal attacks.

Recommended defensive actions

• Apply the patch from commit f989ef9b4cc6c0039a7a82458eebca49e2b58b4b
• Review and update affected datasets to prevent path traversal attacks
• Monitor for suspicious activity related to Datasets library usage
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record and NVD entry provide details on the path traversal vulnerability in Hugging Face's Datasets library. The vulnerability is due to improper validation of the file_name metadata field in folder-based dataset builders. The CVE record was published on 2026-07-24T15:19:07.493Z and has not been modified since then. The vulnerability can be mitigated by applying the patch from commit f989ef9. Organizations should verify their deployments and review affected datasets to prevent path traversal attacks.

Official resources