Vulnerability Description
A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically in the `get_configuration_file()` function within the `transformers.configuration_utils` module. The affected version is 4.49.0, and the issue is resolved in version 4.51.0. The vulnerability arises from the use of a regular expression pattern `config\.(.*)\.json` that can be exploited to cause excessive CPU consumption through crafted input strings, leading to catastrophic backtracking. This can result in model serving disruption, resource exhaustion, and increased latency in applications using the library.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Huggingface | Transformers | >= 4.49.0, < 4.51.0 |
Related Weaknesses (CWE)
References
- https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6aPatch
- https://huntr.com/bounties/c7a69150-54f8-4e81-8094-791e7a2a0f29ExploitThird Party Advisory
FAQ
What is CVE-2025-3263?
CVE-2025-3263 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 in the `get_configuration_file()` function within the `transformers.c...
How severe is CVE-2025-3263?
CVE-2025-3263 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-2025-3263?
Check the references section above for vendor advisories and patch information. Affected products include: Huggingface Transformers.