{
  "id": "CVE-2023-22796",
  "sourceIdentifier": "support@hackerone.com",
  "published": "2023-02-09T20:15:11.487",
  "lastModified": "2023-03-14T08:15:13.813",
  "vulnStatus": "Modified",
  "descriptions": [
    {
      "lang": "en",
      "value": "A regular expression based DoS vulnerability in Active Support <6.1.7.1 and <7.0.4.1. A specially crafted string passed to the underscore method can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability."
    }
  ],
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        "source": "nvd@nist.gov",
        "type": "Primary",
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          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
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  },
  "weaknesses": [
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          "value": "CWE-1333"
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      "source": "support@hackerone.com",
      "type": "Secondary",
      "description": [
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          "lang": "en",
          "value": "CWE-400"
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  ],
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    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:activesupport_project:activesupport:*:*:*:*:*:ruby:*:*",
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  "references": [
    {
      "url": "https://discuss.rubyonrails.org/t/cve-2023-22796-possible-redos-based-dos-vulnerability-in-active-supports-underscore/82116",
      "source": "support@hackerone.com",
      "tags": [
        "Patch",
        "Vendor Advisory"
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      "url": "https://www.debian.org/security/2023/dsa-5372",
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}