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.
References
| Link | Resource |
|---|---|
| https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be | Patch |
| https://huntr.com/bounties/6a6c933f-9ce8-4ded-8b3b-2c1444c61f36 | Exploit Third Party Advisory |
Configurations
History
21 Oct 2025, 13:33
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
| References | () https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be - Patch | |
| References | () https://huntr.com/bounties/6a6c933f-9ce8-4ded-8b3b-2c1444c61f36 - Exploit, Third Party Advisory | |
| CPE | cpe:2.3:a:huggingface:transformers:4.52.4:*:*:*:*:*:*:* | |
| First Time |
Huggingface transformers
Huggingface |
12 Sep 2025, 11:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-09-12 11:15
Updated : 2025-10-21 13:33
NVD link : CVE-2025-6638
Mitre link : CVE-2025-6638
CVE.ORG link : CVE-2025-6638
JSON object : View
Products Affected
huggingface
- transformers
CWE
CWE-1333
Inefficient Regular Expression Complexity