CVE-2025-3933
July 11, 2025
A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically within the DonutProcessor class's "token2json()" method. This vulnerability affects versions 4.50.3 and earlier, and is fixed in version 4.52.1. The issue arises from the regex pattern "<s_(.*?)>" which can be exploited to cause excessive CPU consumption through crafted input strings due to catastrophic backtracking. This vulnerability can lead to service disruption, resource exhaustion, and potential API service vulnerabilities, impacting document processing tasks using the Donut model.
Affected Packages
transformers (CONDA):
Affected version(s) >=2.1.1 <4.52.1Fix Suggestion:
Update to version 4.52.1https://github.com/huggingface/transformers.git (GITHUB):
Affected version(s) >=v0.1.2 <v4.52.1Fix Suggestion:
Update to version v4.52.1transformers (PYTHON):
Affected version(s) >=0.1 <4.52.1Fix Suggestion:
Update to version 4.52.1transformers (PYTHON):
Affected version(s) >=0.1 <4.52.1Fix Suggestion:
Update to version 4.52.1Additional Notes
The description of this vulnerability differs from MITRE.
Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Inefficient Regular Expression Complexity
EPSS
Base Score:
0.03
