CVE-2025-3264— Regular Expression Denial of Service (ReDoS) in huggingface/transformers
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I. Basic Information for CVE-2025-3264
Vulnerability Information
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Vulnerability Title
Regular Expression Denial of Service (ReDoS) in huggingface/transformers
Source: NVD (National Vulnerability Database)
Vulnerability Description
A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically in the `get_imports()` function within `dynamic_module_utils.py`. This vulnerability affects versions 4.49.0 and is fixed in version 4.51.0. The issue arises from a regular expression pattern `\s*try\s*:.*?except.*?:` used to filter out try/except blocks from Python code, which can be exploited to cause excessive CPU consumption through crafted input strings due to catastrophic backtracking. This vulnerability can lead to remote code loading disruption, resource exhaustion in model serving, supply chain attack vectors, and development pipeline disruption.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1333
Source: NVD (National Vulnerability Database)
Vulnerability Title
Hugging Face Transformers 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hugging Face Transformers是Hugging Face开源的为 Jax、PyTorch 和 TensorFlow 打造的先进的自然语言处理。 Hugging Face Transformers 4.49.0版本存在安全漏洞，该漏洞源于dynamic_module_utils.py中get_imports函数的正则表达式复杂性不足，可能导致正则表达式拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| huggingface | huggingface/transformers | unspecified ~ 4.51.0 | - |
II. Public POCs for CVE-2025-3264
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · huggingface · 2025-07-07 · 4 CVEs total
| CVE-2025-3263 | Regular Expression Denial of Service (ReDoS) in huggingface/transformers | |
| CVE-2025-3777 | Improper Input Validation in huggingface/transformers | |
| CVE-2025-3262 | Regular Expression Denial of Service (ReDoS) in huggingface/transformers |
IV. Related Vulnerabilities
Same product: huggingface/transformers
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Regular Expression Denial of Service (ReDoS) in huggingface/ - CVE-2025-5197
Regular Expression Denial of Service (ReDoS) in huggingface/
Same vendor: huggingface
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Same weakness: CWE-1333
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V. Comments for CVE-2025-3264
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