{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "com.fasterxml.jackson.dataformat:jackson-dataformat-smile",
          "product": "jackson-dataformat-smile",
          "repo": "https://github.com/FasterXML/jackson-dataformats-binary",
          "vendor": "FasterXML",
          "versions": [
            {
              "lessThan": "2.18.12",
              "status": "affected",
              "version": "2.9.0",
              "versionType": "maven"
            },
            {
              "status": "unaffected",
              "version": "2.18.12",
              "versionType": "maven"
            },
            {
              "lessThan": "2.21.8",
              "status": "affected",
              "version": "2.19.0",
              "versionType": "maven"
            },
            {
              "status": "unaffected",
              "version": "2.21.8",
              "versionType": "maven"
            },
            {
              "lessThan": "2.22.4",
              "status": "affected",
              "version": "2.22.0",
              "versionType": "maven"
            },
            {
              "status": "unaffected",
              "version": "2.22.4",
              "versionType": "maven"
            }
          ]
        },
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "tools.jackson.dataformat:jackson-dataformat-smile",
          "product": "jackson-dataformat-smile",
          "repo": "https://github.com/FasterXML/jackson-dataformats-binary",
          "vendor": "FasterXML",
          "versions": [
            {
              "lessThan": "3.1.8",
              "status": "affected",
              "version": "3.0.0",
              "versionType": "maven"
            },
            {
              "status": "unaffected",
              "version": "3.1.8",
              "versionType": "maven"
            },
            {
              "lessThan": "3.2.4",
              "status": "affected",
              "version": "3.2.0",
              "versionType": "maven"
            },
            {
              "status": "unaffected",
              "version": "3.2.4",
              "versionType": "maven"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "apvxlab (AppViewX security research)"
        },
        {
          "lang": "en",
          "type": "reporter",
          "value": "Michael-JRead"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "cowtowncoder (Tatu Saloranta)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eThe asynchronous Smile parser (NonBlockingByteArrayParser) uses a raw-binary length prefix taken from untrusted input to allocate a byte[] before the body is read, with no upper bound and no overflow check. On the raw-binary marker 0xFD, _decodeVInt() computes (value \u0026lt;\u0026lt; 6) + (i \u0026amp; 0x3F) without the (value \u0026gt;\u0026gt;\u0026gt; 25) != 0 overflow guard present in the blocking SmileParser._readUnsignedVInt, and _startRawBinary then allocates the declared length immediately.\u003c/p\u003e\u003cp\u003eA Smile feed of roughly ten bytes can therefore force an eager allocation of approximately 2 GB, producing an OutOfMemoryError on reactive or asynchronous Smile endpoints. A VInt crafted to overflow int yields a negative length and a NegativeArraySizeException, a RuntimeException that is not a JacksonException and so escapes the parser contract. Either outcome crashes the request or processing thread.\u003c/p\u003e\u003cp\u003eThis is the same class of issue as CVE-2020-28491 in the CBOR parser of this library, which was fixed with a LONGEST_NON_CHUNKED_BINARY guard; the asynchronous Smile parser never received the equivalent guard. No privileges or user interaction beyond the ability to submit data for parsing are required.\u003c/p\u003e"
            }
          ],
          "value": "The asynchronous Smile parser (NonBlockingByteArrayParser) uses a raw-binary length prefix taken from untrusted input to allocate a byte[] before the body is read, with no upper bound and no overflow check. On the raw-binary marker 0xFD, _decodeVInt() computes (value \u003c\u003c 6) + (i \u0026 0x3F) without the (value \u003e\u003e\u003e 25) != 0 overflow guard present in the blocking SmileParser._readUnsignedVInt, and _startRawBinary then allocates the declared length immediately.\n\n\n\nA Smile feed of roughly ten bytes can therefore force an eager allocation of approximately 2 GB, producing an OutOfMemoryError on reactive or asynchronous Smile endpoints. A VInt crafted to overflow int yields a negative length and a NegativeArraySizeException, a RuntimeException that is not a JacksonException and so escapes the parser contract. Either outcome crashes the request or processing thread.\n\n\n\nThis is the same class of issue as CVE-2020-28491 in the CBOR parser of this library, which was fixed with a LONGEST_NON_CHUNKED_BINARY guard; the asynchronous Smile parser never received the equivalent guard. No privileges or user interaction beyond the ability to submit data for parsing are required."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-130",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-130 Excessive Allocation"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-789",
              "description": "CWE-789 Memory Allocation with Excessive Size Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T00:01:44.496Z",
        "orgId": "36c7be3b-2937-45df-85ea-ca7133ea542c",
        "shortName": "HeroDevs"
      },
      "references": [
        {
          "name": "GHSA-h3c2-2m49-r49w",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/FasterXML/jackson-dataformats-binary/security/advisories/GHSA-h3c2-2m49-r49w"
        }
      ],
      "source": {
        "advisory": "GHSA-h3c2-2m49-r49w",
        "discovery": "EXTERNAL"
      },
      "tags": [
        "x_open-source"
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-10-20T22:47:00.000Z",
          "value": "GHSA-h3c2-2m49-r49w published by the maintainer in FasterXML/jackson-dataformats-binary"
        }
      ],
      "title": "jackson-dataformat-smile: unbounded eager byte[] allocation for raw binary in the async parser allows OutOfMemoryError denial of service",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36c7be3b-2937-45df-85ea-ca7133ea542c",
    "assignerShortName": "HeroDevs",
    "cveId": "CVE-2026-104895",
    "datePublished": "2026-10-28T00:01:44.496Z",
    "dateReserved": "2026-10-02T15:02:48.774Z",
    "dateUpdated": "2026-10-28T00:01:44.496Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}