CVE-2025-2099— Regular Expression Denial of Service (ReDoS) in huggingface/transformers
Quick assessment
Affected
huggingface huggingface/transformers
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
transformers是Hugging Face开源的一个用于机器学习的应用程序。 transformers v4.48.3版本存在安全漏洞，该漏洞源于preprocess_string函数正则表达式处理不当，可能导致正则表达式拒绝服务攻击。
Possible ATT&CK Techniques 1 AI
T1499.002 · Service Exhaustion Flood
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I. Basic Information for CVE-2025-2099
Vulnerability Information
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Vulnerability Title
Regular Expression Denial of Service (ReDoS) in huggingface/transformers
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the `preprocess_string()` function of the `transformers.testing_utils` module in huggingface/transformers version v4.48.3 allows for a Regular Expression Denial of Service (ReDoS) attack. The regular expression used to process code blocks in docstrings contains nested quantifiers, leading to exponential backtracking when processing input with a large number of newline characters. An attacker can exploit this by providing a specially crafted payload, causing high CPU usage and potential application downtime, effectively resulting in a Denial of Service (DoS) scenario.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
transformers 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
transformers是Hugging Face开源的一个用于机器学习的应用程序。 transformers v4.48.3版本存在安全漏洞，该漏洞源于preprocess_string函数正则表达式处理不当，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 ~ 4.50.0 | - |
|
II. Public POCs for CVE-2025-2099
| # | POC Description | Source Link | Shenlong Link |
|---|
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