{
  "cveId": "CVE-2026-104895",
  "url": "https://patchblox.com/security/cve/CVE-2026-104895",
  "summary": "CVE-2026-104895 is fixed in jackson-dataformats-binary on 1 platform by DEBIAN-CVE-2026-104895 (version 2.22.4-1), released November 8, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "jackson-dataformats-binary: The asynchronous Smile parser (NonBlockingByteArrayParser) uses a raw-binary length prefix taken from untrusted input...",
  "description": "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) \u002B (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.    A 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.    This 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.",
  "published": "2026-10-28T00:17:11Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.0038,
  "epssPercentile": 0.32419,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "jackson-dataformats-binary",
      "release": "Debian 14",
      "fixedVersion": "2.22.4-1",
      "fix": "DEBIAN-CVE-2026-104895",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-104895",
      "released": "2026-11-08T01:21:48Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-11T19:49:26Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}