CVE-2025-3262

A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the huggingface/transformers repository, specifically in version 4.49.0. The vulnerability is due to inefficient regular expression complexity in the `SETTING_RE` variable within the `transformers/commands/chat.py` file. The regex contains repetition groups and non-optimized quantifiers, leading to exponential backtracking when processing 'almost matching' payloads. This can degrade application performance and potentially result in a denial-of-service (DoS) when handling specially crafted input strings. The issue is fixed in version 4.51.0.
Configurations

Configuration 1 (hide)

cpe:2.3:a:huggingface:transformers:*:*:*:*:*:*:*:*

History

02 Aug 2025, 01:20

Type Values Removed Values Added
References () https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76 - () https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76 - Patch
References () https://huntr.com/bounties/ecf5ccc4-39e7-4fb3-b547-14a41d31a184 - () https://huntr.com/bounties/ecf5ccc4-39e7-4fb3-b547-14a41d31a184 - Exploit, Third Party Advisory
CVSS v2 : unknown
v3 : 5.3
v2 : unknown
v3 : 7.5
First Time Huggingface transformers
Huggingface
CPE cpe:2.3:a:huggingface:transformers:*:*:*:*:*:*:*:*

08 Jul 2025, 16:18

Type Values Removed Values Added
Summary
  • (es) Se descubrió una vulnerabilidad de denegación de servicio por expresión regular (ReDoS) en el repositorio huggingface/transformers, concretamente en la versión 4.49.0. La vulnerabilidad se debe a la complejidad ineficiente de la expresión regular en la variable `SETTING_RE` del archivo `transformers/commands/chat.py`. La expresión regular contiene grupos de repetición y cuantificadores no optimizados, lo que provoca un retroceso exponencial al procesar payloads casi coincidentes. Esto puede reducir el rendimiento de la aplicación y potencialmente provocar una denegación de servicio (DoS) al procesar cadenas de entrada especialmente manipuladas. El problema se ha corregido en la versión 4.51.0.

07 Jul 2025, 16:15

Type Values Removed Values Added
References () https://huntr.com/bounties/ecf5ccc4-39e7-4fb3-b547-14a41d31a184 - () https://huntr.com/bounties/ecf5ccc4-39e7-4fb3-b547-14a41d31a184 -

07 Jul 2025, 10:15

Type Values Removed Values Added
New CVE

Information

Published : 2025-07-07 10:15

Updated : 2025-08-02 01:20


NVD link : CVE-2025-3262

Mitre link : CVE-2025-3262

CVE.ORG link : CVE-2025-3262


JSON object : View

Products Affected

huggingface

  • transformers
CWE
CWE-1333

Inefficient Regular Expression Complexity