{
  "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-2023-6245",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-6245",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2023-12-08T14:26:09.331Z",
    "updatedAt": "2024-12-02T14:33:16.496Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "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": "Infinite decoding loop through specially crafted payload",
      "summary": "The Candid library causes a Denial of Service while \nparsing a specially crafted payload with 'empty' data type. For example,\n if the payload is `record { * ; empty }` and the canister interface expects `record { * }` then the Rust candid decoder treats empty as an extra field required by the type.  The problem with the type empty is that the candid Rust library wrongly categorizes empty as a recoverable error when skipping the field and thus causing an infinite decoding loop.\n\n\nCanisters using affected versions of candid\n are exposed to denial of service by causing the decoding to run \nindefinitely until the canister traps due to reaching maximum \ninstruction limit per execution round. Repeated exposure to the payload \nwill result in degraded performance of the canister. Note: Canisters written in Motoko are unaffected.\n\n\n\n",
      "affected": [
        {
          "vendor": "Internet Computer",
          "product": "Candid",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0.9.0",
              "status": "affected",
              "versionType": "0.0.0",
              "lessThan": "0.9.10"
            }
          ]
        }
      ]
    }
  }
}