CVE-2025-3264

Description

A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically in the `get_imports()` function within `dynamic_module_utils.py`. This vulnerability affects versions 4.49.0 and is fixed in version 4.51.0. The issue arises from a regular expression pattern `\s*try\s*:.*?except.*?:` used to filter out try/except blocks from Python code, which can be exploited to cause excessive CPU consumption through crafted input strings due to catastrophic backtracking. This vulnerability can lead to remote code loading disruption, resource exhaustion in model serving, supply chain attack vectors, and development pipeline disruption.

How to fix CVE-2025-3264

To remediate CVE-2025-3264, upgrade the affected package to a fixed version below.

• —upgrade to 4.51.0 or later

Is CVE-2025-3264 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-2025-3264
• PATCHgithub.com/huggingface/transformers
• WEBgithub.com/huggingface/transformers/commit/0720e206c6ba28887e4d60ef60a6a089f6c1cc76
• WEBgithub.com/huggingface/transformers/commit/126abe3461762e5fc180e7e614391d1b4ab051ca