CVE-2026-75104
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk19th percentile - higher than 19% of all known CVEs
Summary
Hugging Face Transformers fails to validate shard filenames in checkpoint index files, allowing attackers to read arbitrary files outside the model directory. Malicious index files with parent-directory references or absolute paths can lead to file disclosure and filesystem reconnaissance.
Risk Assessment
Risk of exposing sensitive files on the system, potentially leading to data leakage or further attacks.
Recommendation
Validate shard file paths and block references outside the model directory.
Other vulnerabilities in Hugging Face Transformers
See all- CVE-2026-80047High
A vulnerability in Hugging Face Transformers (versions 4.57.0 to 5.16.1) allows remote Python files to be written to local disk without user consent when using GenerativePreTrainedModel.load_custom_generate(). The function fetches and caches a remote module file before performing the required trust_remote_code consent check, inverting the security model enforced by other code-loading paths. As a result, attacker-controlled Python code from custom_generate/generate.py is copied into the user's ~/.cache/huggingface/modules directory even if the user declines the trust prompt.
- CVE-2026-9856High
Hugging Face Transformers up to version 5.8.0.dev0 has an arbitrary file write vulnerability via path traversal in save_pretrained(). Keys from chat_template are used as filenames without validation.
- CVE-2025-6051Medium
A ReDoS vulnerability was discovered in the Hugging Face Transformers library in the normalize_numbers() method of the EnglishNormalizer class. It affects versions up to 4.52.4 and is fixed in 4.53.0. Crafted input with long digit sequences can cause excessive CPU consumption.
Original NVD description (English source)
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 data from NVD (NIST) · CISA KEV · EPSS