Path Traversal in Huggingface Transformers
CVE-2026-75104
Hugging Face Transformers fails to validate shard filenames in checkpoint index files, allowing attackers to read arbitrary files outside the model directory. Attackers can supply malicious index files with parent-directory references or absolute paths that are joined without validation, enabling file disclosure and filesystem reconnaissance.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (19.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Huggingface Transformers — versions 0
Weakness classification (CWE)
References
- github.com/huggingface/transformers/issues/47176 (issue-tracking)
- github.com/huggingface/transformers/issues/47177 (issue-tracking)
- github.com/huggingface/transformers (product)
- github.com/huggingface/transformers/blob/main/src/transformers/utils/hub.py (technical-description)
- www.vulncheck.com/advisories/hugging-face-transformers-path-traversal-via-check… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-75104?
- CVE-2026-75104 is a medium-severity vulnerability in Huggingface Transformers, classified under Path Traversal. CVSS score: 5.5/10. Published 2026-08-17.
- How severe is CVE-2026-75104?
- Medium severity. CVSS v3 base score is 5.5 out of 10.