5.3
Medium
CVE-2025-6638 A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library,…
Description
A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically affecting the MarianTokenizer's `remove_language_code()` method. This vulnerability is present in version 4.52.4 and has been fixed in version 4.53.0. The issue arises from inefficient regex processing, which can be exploited by crafted input strings containing malformed language code patterns, leading to excessive CPU consumption and potential denial of service.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| huggingface/transformers 4.53 | earliest → < 4.53.0 | 4.53.0 |
Other CVEs of huggingface/transformers
The 20 CVEs of huggingface/transformers →
CVE-2026-9856
A vulnerability in huggingface/transformers…
7.1
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CVE-2026-5241
A vulnerability in the LightGlue model loading path of huggingface/transformers version 5.2.0 allows an…
8.0
High
CVE-2026-4372
A critical remote code execution vulnerability exists in all versions of the HuggingFace transformers library prior to…
7.8
High
CVE-2026-1839
A vulnerability in the HuggingFace Transformers library, specifically in the `Trainer` class, allows for arbitrary…
6.5
Medium