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GHSA-q2wp-rjmx-x6x9: Transformers's ReDoS vulnerability in get_configuration_file can lead to catastrophic backtracking

OSV AI package advisories · observation · Jul 7, 2025 · UTC

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 increase

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recordType
vulnerability
status
active
evidenceStatus
reported
region
Global

Evidence & attribution

First collected: 2026-09-19T20:26:46.936Z. This is not the publication date.