{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.0.21.0"
              },
              {
                "introduced": "3.1.0.0"
              },
              {
                "fixed": "3.1.16.0"
              },
              {
                "introduced": "3.2.0.0-dev"
              },
              {
                "fixed": "3.2.0.3-beta1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "introduced": "a0940a9f1e4a8ff20edc9d550a4dea4723d1aa58"
            },
            {
              "fixed": "710eeafcf7cd75fbfd5e34387ee4c373aa875356"
            },
            {
              "fixed": "f3f12ab761fbccaa644937780e7246674033c407"
            },
            {
              "fixed": "45414c1aedcd3cc98244b4c5802ec53e91976f70"
            },
            {
              "fixed": "7303134f13b0f9dc738b8ecabecd8c9f90cbd4c9"
            }
          ],
          "repo": "https://github.com/academysoftwarefoundation/openimageio",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-xh5r-whph-qmc5"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-122",
      "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63422.json"
  },
  "details": "OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A valid tiled openexr image whose width is not a multiple of its tile width can trigger an overflow when a caller reads a partial edge-tile rectangle. openexrinput::read_native_tiles() copies each row into the caller buffer using the padded whole-tile scanline_stride rather than user_scanline_bytes for the requested rectangle, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/openexr.imageio/exrinput.cpp, OpenEXRInput::read_native_tiles(), partial edge tile, user_scanline_bytes, and scanline_stride, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.",
  "id": "CVE-2026-63422",
  "modified": "2026-09-20T11:30:45.966960110Z",
  "published": "2026-09-18T15:37:57.906Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.21.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.16.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-xh5r-whph-qmc5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63422.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63422"
    },
    {
      "type": "FIX",
      "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/7303134f13b0f9dc738b8ecabecd8c9f90cbd4c9"
    },
    {
      "type": "FIX",
      "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5295"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OpenImageIO OpenEXR plugin partial edge tile heap out-of-bounds write"
}