CVE-2025-6051

NONE EPSS 26.8%
Published Sep 14, 20259mo ago · Modified Jun 17, 20261w ago
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Published Sep 14, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically within the `normalize_numbers()` method of the `EnglishNormalizer` class. This vulnerability affects versions up to 4.52.4 and is fixed in version 4.53.0. The issue arises from the method's handling of numeric strings, which can be exploited using crafted input strings containing long sequences of digits, leading to excessive CPU consumption. This vulnerability impacts text-to-speech and number normalization tasks, potentially causing service disruption, resource exhaustion, and API vulnerabilities.

Threat Intelligence

EPSS Exploit Probability
26.8% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-1333

Affected Products 1

VendorProductVersionRange
huggingfacetransformers4.52.4any

References 2

  • github.com https://github.com/huggingface/transformers/commit/ba8eaba9865618253f997784aa565b96206426f0
    Patch
  • huntr.com https://huntr.com/bounties/af929523-7b59-418a-bf55-301830b2ac9d
    ExploitIssue TrackingPatchThird Party Advisory

Remediation

  • github.com https://github.com/huggingface/transformers/commit/ba8eaba9865618253f997784aa565b96206426f0
    Patch
  • huntr.com https://huntr.com/bounties/af929523-7b59-418a-bf55-301830b2ac9d
    ExploitIssue TrackingPatchThird Party Advisory