{
  "cveId": "CVE-2026-59956",
  "url": "https://patchblox.com/security/cve/CVE-2026-59956",
  "summary": "CVE-2026-59956 is fixed in openimageio on 1 platform by DEBIAN-CVE-2026-59956 (version 3.1.18.0\u002Bdfsg-2), released October 13, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "openimageio: OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX...",
  "description": "OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1, An uncompressed 16-bit iff image with a z-buffer makes iffinput::readimg() allocate a temporary scanline from m_header.rgba_count but copy from it using m_header.pixel_bytes(), whose stride also includes z-buffer bytes. the oversized memcpy reads beyond the temporary heap buffer and copies adjacent memory into the output image, resulting in a crash or disclosure of adjacent heap data. The affected implementation is identified by src/iff.imageio/iffinput.cpp, IffInput::readimg(), m_header.rgba_count, and m_header.pixel_bytes(), which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1.",
  "published": "2026-09-18T16:17:07Z",
  "severity": "medium",
  "cvss": 6.1,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
  "epss": 0.00202,
  "epssPercentile": 0.10204,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "openimageio",
      "release": "Debian 14",
      "fixedVersion": "3.1.18.0\u002Bdfsg-2",
      "fix": "DEBIAN-CVE-2026-59956",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-59956",
      "released": "2026-10-13T23:28:43Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}