A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically within the `normalize_numbers()` method of the `EnglishNormalizer` class. This vulnerability affects versions up to 4.52.4 and is fixed in version 4.53.0. The issue arises from the method's handling of numeric strings, which can be exploited using crafted input strings containing long sequences of digits, leading to excessive CPU consumption. This vulnerability impacts text-to-speech and number normalization tasks, potentially causing service disruption, resource exhaustion, and API vulnerabilities.
References
| Link | Resource |
|---|---|
| https://github.com/huggingface/transformers/commit/ba8eaba9865618253f997784aa565b96206426f0 | Patch |
| https://huntr.com/bounties/af929523-7b59-418a-bf55-301830b2ac9d | Exploit Third Party Advisory Issue Tracking Patch |
Configurations
History
21 Oct 2025, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/huggingface/transformers/commit/ba8eaba9865618253f997784aa565b96206426f0 - Patch | |
| References | () https://huntr.com/bounties/af929523-7b59-418a-bf55-301830b2ac9d - Exploit, Third Party Advisory, Issue Tracking, Patch | |
| First Time |
Huggingface transformers
Huggingface |
|
| CPE | cpe:2.3:a:huggingface:transformers:4.52.4:*:*:*:*:*:*:* |
14 Sep 2025, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-09-14 17:15
Updated : 2025-10-21 14:16
NVD link : CVE-2025-6051
Mitre link : CVE-2025-6051
CVE.ORG link : CVE-2025-6051
JSON object : View
Products Affected
huggingface
- transformers
CWE
CWE-1333
Inefficient Regular Expression Complexity