CVE-2025-3263

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.

How to fix CVE-2025-3263

To remediate CVE-2025-3263, upgrade the affected package to a fixed version below.

• —upgrade to 4.51.0 or later

Is CVE-2025-3263 being exploited?

Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 4.51.0

CVSS scores

References (5)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2025-3263
• PATCHgithub.com/huggingface/transformers
• WEBgithub.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
• WEBgithub.com/huggingface/transformers/commit/126abe3461762e5fc180e7e614391d1b4ab051ca