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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
https://huntr.com/bounties/ecf5ccc4-39e7-4fb3-b547-14a41d31a184
https://huntr.com/bounties/ecf5ccc4-39e7-4fb3-b547-14a41d31a184

Configurations

No configuration.

History

08 Jul 2025, 16:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-07-07 10:15

Updated : 2025-07-08 16:18

NVD link : CVE-2025-3262

Mitre link : CVE-2025-3262

CVE.ORG link : CVE-2025-3262

JSON object : View

Products Affected

No product.

CWE

CWE-1333

Inefficient Regular Expression Complexity

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