Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Huggingface | Transformers | < 4.52.1 |
Related Weaknesses (CWE)
References
- https://github.com/huggingface/transformers/commit/ebbe9b12dd75b69f92100d684c47fPatch
- https://huntr.com/bounties/25282953-5827-4384-bb6f-5790d275721bExploitThird Party Advisory
FAQ
What is CVE-2025-3933?
CVE-2025-3933 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 vulnera...
How severe is CVE-2025-3933?
CVE-2025-3933 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-3933?
Check the references section above for vendor advisories and patch information. Affected products include: Huggingface Transformers.