medium5.3
CVE-2025-3263
Transformers's ReDoS vulnerability in get_configuration_file can lead to catastrophic backtracking
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | transformers | < 4.51.0 | 4.51.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Huggingface | Transformers | from 4.49.0 before 4.51.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
- https://huntr.com/bounties/c7a69150-54f8-4e81-8094-791e7a2a0f29
- https://github.com/advisories/GHSA-q2wp-rjmx-x6x9
- https://nvd.nist.gov/vuln/detail/CVE-2025-3263
- https://github.com/huggingface/transformers/commit/126abe3461762e5fc180e7e614391d1b4ab051ca