FKIE_CVE-2025-6051

Vulnerability from fkie_nvd - Published: 2025-09-14 17:15 - Updated: 2025-10-21 14:16
Severity ?
5.3 (Medium) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
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.
References
security@huntr.devhttps://github.com/huggingface/transformers/commit/ba8eaba9865618253f997784aa565b96206426f0Patch
security@huntr.devhttps://huntr.com/bounties/af929523-7b59-418a-bf55-301830b2ac9dExploit, Third Party Advisory, Issue Tracking, Patch
Impacted products
Vendor Product Version
huggingface transformers 4.52.4
To clipboard 

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      "value": "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\u0027s 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."
    }
  ],
  "id": "CVE-2025-6051",
  "lastModified": "2025-10-21T14:16:24.770",
  "metrics": {
    "cvssMetricV30": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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