CVE-2025-1194

Description

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).

Reserved 2025-02-10 | Published 2025-04-29 | Updated 2025-04-29 | Assigner @huntr_ai

Problem types

CWE-1333 Inefficient Regular Expression Complexity

Product status

Any version before 4.50.0
affected

References

huntr.com/bounties/86f58dcd-683f-4adc-a735-849f51e9abb2

github.com/...ommit/92c5ca9dd70de3ade2af2eb835c96215cc50e815

cve.org (CVE-2025-1194)

nvd.nist.gov (CVE-2025-1194)

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