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CVE-2025-6638 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be huntr.dev
https://huntr.com/bounties/6a6c933f-9ce8-4ded-8b3b-2c1444c61f36 huntr.dev

Weakness Enumeration

CWE-ID CWE Name Source
CWE-1333 Inefficient Regular Expression Complexity huntr.dev  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-6638
NVD Published Date:
09/12/2025
NVD Last Modified:
09/12/2025
Source:
huntr.dev