medium4.3
CVE-2025-1194
Transformers Regular Expression Denial of Service (ReDoS) vulnerability
Impact
A Regular Expression Denial of Service (ReDoS) vulnerability was identified in the huggingface/transformers library, specifically in the file `tokenization_gpt_neox_japanese.py` of the GPT-NeoX-Japanese model. The vulnerability occurs in the SubWordJapaneseTokenizer class, where regular expressions process specially crafted inputs. The issue stems from a regex exhibiting exponential complexity under certain conditions, leading to excessive backtracking. This can result in high CPU usage and potential application downtime, effectively creating a Denial of Service (DoS) scenario. The affected version is v4.48.1 (latest).
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | transformers | < 4.50.0 | 4.50.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Huggingface | Transformers | before 4.50.0 |