A vulnerability in the `preprocess_string()` function of the `transformers.testing_utils` module in huggingface/transformers version v4.48.3 allows for a Regular Expression Denial of Service (ReDoS) attack. The regular expression used to process code blocks in docstrings contains nested quantifiers, leading to exponential backtracking when processing input with a large number of newline characters. An attacker can exploit this by providing a specially crafted payload, causing high CPU usage and potential application downtime, effectively resulting in a Denial of Service (DoS) scenario.
References
| Link | Resource |
|---|---|
| https://github.com/huggingface/transformers/commit/8cb522b4190bd556ce51be04942720650b1a3e57 | Patch |
| https://huntr.com/bounties/97b780f3-ffca-424f-ad5d-0e1c57a5bde4 | Exploit Third Party Advisory |
Configurations
History
21 May 2025, 17:43
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Huggingface
Huggingface transformers |
|
| CPE | cpe:2.3:a:huggingface:transformers:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
| References | () https://huntr.com/bounties/97b780f3-ffca-424f-ad5d-0e1c57a5bde4 - Exploit, Third Party Advisory | |
| References | () https://github.com/huggingface/transformers/commit/8cb522b4190bd556ce51be04942720650b1a3e57 - Patch |
19 May 2025, 12:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-05-19 12:15
Updated : 2025-05-21 17:43
NVD link : CVE-2025-2099
Mitre link : CVE-2025-2099
JSON object : View
Products Affected
huggingface
- transformers
CWE
CWE-1333
Inefficient Regular Expression Complexity