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.

INFO

Published Date :

2025-09-12T10:46:07.934Z

Last Modified :

2025-09-12T11:52:53.854Z

Source :

@huntr_ai
AFFECTED PRODUCTS

The following products are affected by CVE-2025-6638 vulnerability.

Vendors Products
Huggingface
  • Transformers
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-6638.

URL Resource
https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be cve-icon cve-icon cve-icon
https://huntr.com/bounties/6a6c933f-9ce8-4ded-8b3b-2c1444c61f36 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-6638 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-6638 cve-icon
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Detailed values of each vector for above chart.
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Integrity Impact
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