{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-39958",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-39958",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2023-08-10T17:04:51.729Z",
    "updatedAt": "2024-10-10T15:52:01.095Z",
    "importedAt": "2026-10-24T01:56:58.683Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Missing brute force protection on password reset token OAuth2 API controller",
      "summary": "Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.10.13, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1, missing protection allows an attacker to brute force the client secrets of configured OAuth2 clients. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 22.2.10.13, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.",
      "affected": [
        {
          "vendor": "nextcloud",
          "product": "security-advisories",
          "versions": [
            {
              "version": ">= 22.0.0, < 22.2.10.13",
              "status": "affected"
            },
            {
              "version": ">= 23.0.0, < 23.0.12.8",
              "status": "affected"
            },
            {
              "version": ">= 24.0.0, < 24.0.12.5",
              "status": "affected"
            },
            {
              "version": ">= 25.0.0, < 25.0.9",
              "status": "affected"
            },
            {
              "version": ">= 26.0.0, < 26.0.4",
              "status": "affected"
            },
            {
              "version": ">= 27.0.0, < 27.0.1",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}