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CVE-2025-6638

CVE-2025-6638 · Regular Expression Denial of Service (ReDoS) in huggingface/transformers

This page contains facts from public vulnerability sources. Check the original advisory before updating.

A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically affecting the MarianTokenizer's `remove_language_code()` method. This vulnerability is present in version 4.52.4 and has been fixed in version 4.53.0. The issue arises from inefficient regex processing, which can be exploited by crafted input strings containing malformed language code patterns, leading to excessive CPU consumption and potential denial of service.

CVSS 5.3 · Medium · EPSS 0.5% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • huggingface/transformers

    Versions
    • ≥ unspecified, < 4.53.0: Affected (custom)

    Update to 4.53.0

  • transformers PyPI

    Versions
    • 0.1
    • 2.0.0
    • 2.1.0
    • 2.1.1
    • 2.10.0
    • 2.11.0
    • 2.2.0
    • 2.2.1
    • 2.2.2
    • 2.3.0
    • 2.4.0
    • 2.4.1
    • 2.5.0
    • 2.5.1
    • 2.6.0
    • 2.7.0
    • 2.8.0
    • 2.9.0
    • 2.9.1
    • 3.0.0
    • 3.0.1
    • 3.0.2
    • 3.1.0
    • 3.2.0
    • 3.3.0
    • 3.3.1
    • 3.4.0
    • 3.5.0
    • 3.5.1
    • 4.0.0
    • 4.0.0rc1
    • 4.0.1
    • 4.1.0
    • 4.1.1
    • 4.10.0
    • 4.10.1
    • 4.10.2
    • 4.10.3
    • 4.11.0
    • 4.11.1
    • 4.11.2
    • 4.11.3
    • 4.12.0
    • 4.12.1
    • 4.12.2
    • 4.12.3
    • 4.12.4
    • 4.12.5
    • 4.13.0
    • 4.14.0
    • 4.14.1
    • 4.15.0
    • 4.16.0
    • 4.16.1
    • 4.16.2
    • 4.17.0
    • 4.18.0
    • 4.19.0
    • 4.19.1
    • 4.19.2
    • 4.19.3
    • 4.19.4
    • 4.2.0
    • 4.2.1
    • 4.2.2
    • 4.20.0
    • 4.20.1
    • 4.21.0
    • 4.21.1
    • 4.21.2
    • 4.21.3
    • 4.22.0
    • 4.22.1
    • 4.22.2
    • 4.23.0
    • 4.23.1
    • 4.24.0
    • 4.25.0
    • 4.25.1
    • 4.26.0
    • 4.26.1
    • 4.27.0
    • 4.27.1
    • 4.27.2
    • 4.27.3
    • 4.27.4
    • 4.28.0
    • 4.28.1
    • 4.29.0
    • 4.29.1
    • 4.29.2
    • 4.3.0
    • 4.3.0rc1
    • 4.3.1
    • 4.3.2
    • 4.3.3
    • 4.30.0
    • 4.30.1
    • 4.30.2
    • 4.31.0
    • 4.32.0
    • 4.32.1
    • 4.33.0
    • 4.33.1
    • 4.33.2
    • 4.33.3
    • 4.34.0
    • 4.34.1
    • 4.35.0
    • 4.35.1
    • 4.35.2
    • 4.36.0
    • 4.36.1
    • 4.36.2
    • 4.37.0
    • 4.37.1
    • 4.37.2
    • 4.38.0
    • 4.38.1
    • 4.38.2
    • 4.39.0
    • 4.39.1
    • 4.39.2
    • 4.39.3
    • 4.4.0
    • 4.4.1
    • 4.4.2
    • 4.40.0
    • 4.40.1
    • 4.40.2
    • 4.41.0
    • 4.41.1
    • 4.41.2
    • 4.42.0
    • 4.42.1
    • 4.42.2
    • 4.42.3
    • 4.42.4
    • 4.43.0
    • 4.43.1
    • 4.43.2
    • 4.43.3
    • 4.43.4
    • 4.44.0
    • 4.44.1
    • 4.44.2
    • 4.45.0
    • 4.45.1
    • 4.45.2
    • 4.46.0
    • 4.46.1
    • 4.46.2
    • 4.46.3
    • 4.47.0
    • 4.47.1
    • 4.48.0
    • 4.48.1
    • 4.48.2
    • 4.48.3
    • 4.49.0
    • 4.5.0
    • 4.5.1
    • 4.50.0
    • 4.50.1
    • 4.50.2
    • 4.50.3
    • 4.51.0
    • 4.51.1
    • 4.51.2
    • 4.51.3
    • 4.52.0
    • 4.52.1
    • 4.52.2
    • 4.52.3
    • 4.52.4
    • 4.6.0
    • 4.6.1
    • 4.7.0
    • 4.8.0
    • 4.8.1
    • 4.8.2
    • 4.9.0
    • 4.9.1
    • 4.9.2
    Affected ranges
    • ECOSYSTEM: < 4.53.0

    Update to 4.53.0

Original sources

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