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CVE-2025-3777— Improper Input Validation 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.

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及之前版本存在输入验证错误漏洞，该漏洞源于image_utils.py中URL验证不足，可能导致钓鱼攻击。

AI Predicted 7.5 Difficulty: Easy EPSS 0.38% · P29
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I. Basic Information for CVE-2025-3777

Vulnerability Information
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Vulnerability Title
Improper Input Validation in huggingface/transformers
Source: CVE Program / CVE List V5
Vulnerability Description
Hugging Face Transformers versions up to 4.49.0 are affected by an improper input validation vulnerability in the `image_utils.py` file. The vulnerability arises from insecure URL validation using the `startswith()` method, which can be bypassed through URL username injection. This allows attackers to craft URLs that appear to be from YouTube but resolve to malicious domains, potentially leading to phishing attacks, malware distribution, or data exfiltration. The issue is fixed in version 4.52.1.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Hugging Face Transformers 输入验证错误漏洞
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及之前版本存在输入验证错误漏洞，该漏洞源于image_utils.py中URL验证不足，可能导致钓鱼攻击。
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 ~ 4.52.1 -

II. Public POCs for CVE-2025-3777

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III. Intelligence Information for CVE-2025-3777

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Patches & Fixes for CVE-2025-3777 (1)

Vendor Advisories for CVE-2025-3777 (1)

Same Patch Batch · huggingface · 2025-07-07 · 4 CVEs total

CVE-2025-3263 Regular Expression Denial of Service (ReDoS) in huggingface/transformers
CVE-2025-3262 Regular Expression Denial of Service (ReDoS) in huggingface/transformers
CVE-2025-3264 Regular Expression Denial of Service (ReDoS) in huggingface/transformers

IV. Related Vulnerabilities

Same product: huggingface/transformers
Same vendor: huggingface
Same weakness: CWE-20

V. Comments for CVE-2025-3777

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