Description
The huggingface/transformers library, versions prior to 4.53.0, is vulnerable to Regular Expression Denial of Service (ReDoS) in the AdamWeightDecay optimizer. The vulnerability arises from the _do_use_weight_decay method, which processes user-controlled regular expressions in the include_in_weight_decay and exclude_from_weight_decay lists. Malicious regular expressions can cause catastrophic backtracking during the re.search call, leading to 100% CPU utilization and a denial of service. This issue can be exploited by attackers who can control the patterns in these lists, potentially causing the machine learning task to hang and rendering services unresponsive.
INFO
Published Date :
2025-09-23T13:56:15.636Z
Last Modified :
2025-09-23T14:56:29.038Z
Source :
@huntr_ai
AFFECTED PRODUCTS
The following products are affected by CVE-2025-6921 vulnerability.
| Vendors | Products |
|---|---|
| Huggingface |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2025-6921.
