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).

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-15128 Transformers Regular Expression Denial of Service (ReDoS) vulnerability
Github GHSA Github GHSA GHSA-fpwr-67px-3qhx Transformers Regular Expression Denial of Service (ReDoS) vulnerability
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 01 Aug 2025 22:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:huggingface:transformers:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}


Tue, 29 Apr 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 29 Apr 2025 11:45:00 +0000

Type Values Removed Values Added
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).
Title Regular Expression Denial of Service (ReDoS) in huggingface/transformers
Weaknesses CWE-1333
References
Metrics cvssV3_0

{'score': 4.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published:

Updated: 2025-04-29T13:21:13.446Z

Reserved: 2025-02-10T14:13:43.276Z

Link: CVE-2025-1194

cve-icon Vulnrichment

Updated: 2025-04-29T13:21:04.935Z

cve-icon NVD

Status : Analyzed

Published: 2025-04-29T12:15:31.717

Modified: 2025-08-01T21:56:15.790

Link: CVE-2025-1194

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-07-12T15:26:26Z

Weaknesses