Medium · CVSS 6.9CVE-2026-66007

Datasets Path Traversal via Unsanitized file_name Metadata

Answer in brief

CVE-2026-66007 records a Medium severity (CVSS 6.9) vulnerability in Datasets Path Traversal via Unsanitized file_name Metadata. The current sources do not mark it as known exploited. The current feed maps huggingface/datasets (generic), datasets (pypi). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 24, 2026Updated Oct 1, 2026Source checked Oct 1, 2026First seen by HOL Aug 18, 2026Material review Oct 1, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.9
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps huggingface/datasets (generic), datasets (pypi). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:huggingface:datasets::::::python::*	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
huggingface/datasetsgeneric	>=0 <=5.0.0	Not reported
datasetspypi	>=0 <5.0.1	5.0.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for huggingface/datasets, datasets.
Review the reported fix. Update datasets to 5.0.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Jul 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 18, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.