{
  "threat_severity" : "Moderate",
  "public_date" : "2025-07-11T09:22:27Z",
  "bugzilla" : {
    "description" : "transformers: Regular Expression Denial of Service (ReDoS) in huggingface/transformers",
    "id" : "2379517",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2379517"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.3",
    "cvss3_scoring_vector" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
    "status" : "draft"
  },
  "cwe" : "CWE-1333",
  "details" : [ "A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically within the DonutProcessor class's `token2json()` method. This vulnerability affects versions 4.50.3 and earlier, and is fixed in version 4.52.1. The issue arises from the regex pattern `<s_(.*?)>` which can be exploited to cause excessive CPU consumption through crafted input strings due to catastrophic backtracking. This vulnerability can lead to service disruption, resource exhaustion, and potential API service vulnerabilities, impacting document processing tasks using the Donut model.", "A regular expression denial of service flaw has been discovered in the Hugging Face Transformers library. The DonutProcessor class's `token2json()` method may consume excessive CPU resources given maliciously designed input." ],
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  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2025-3933\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-3933\nhttps://github.com/huggingface/transformers/commit/ebbe9b12dd75b69f92100d684c47f923ee262a93\nhttps://huntr.com/bounties/25282953-5827-4384-bb6f-5790d275721b" ],
  "name" : "CVE-2025-3933",
  "mitigation" : {
    "value" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
    "lang" : "en:us"
  },
  "csaw" : false
}