{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "242a059aedc1935097d9aa1dc3f099750467ba75"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "13.0.0",
                "range": [
                  {
                    "fixed": "293218ad059d994baf1777d882911bed6a49704a"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "242a059aedc1935097d9aa1dc3f099750467ba75"
            },
            {
              "fixed": "293218ad059d994baf1777d882911bed6a49704a"
            }
          ],
          "repo": "https://github.com/python-pillow/pillow",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-8g5g-8vmr-9782"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-122"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112403.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "range": [
              {
                "fixed": "13.0.0"
              }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
          }
        ]
      },
      {
        "extracted_events": [
          {
            "range": [
              {
                "fixed": "13.0.0"
              },
              {
                "fixed": "13.0.0"
              }
            ],
            "source": "DESCRIPTION"
          }
        ]
      }
    ]
  },
  "details": "Pillow is a Python imaging library. Prior to 13.0.0, Pillow's JPEG decoder can write a full-width scanline into a buffer sized for a requested draft scale. ImagingJpegDecode does not verify libjpeg's actual output width and component count after scaling is requested, and an 8-bit lossless SOF3 JPEG decoded by a build linked to libjpeg-turbo 3.x can ignore the requested downscaling geometry. An attacker can supply such a JPEG to an application that uses draft() or thumbnail() to request downscaling. This can corrupt heap memory, crash the process, or potentially allow code execution. Older libjpeg-turbo 2.x and IJG builds reject the SOF3 input. This issue is fixed in version 13.0.0.",
  "id": "CVE-2026-112403",
  "modified": "2026-10-21T02:30:58.945630260Z",
  "published": "2026-10-19T21:22:21.077Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112403.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python-pillow/Pillow/commit/242a059aedc1935097d9aa1dc3f099750467ba75"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-pillow/Pillow/releases/tag/13.0.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-8g5g-8vmr-9782"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112403"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Pillow: Heap buffer overflow in ImagingJpegDecode"
}