OpenJPEG through 2.3.1 has a heap-based buffer overflow in opj_t1_clbl_decode_processor in openjp2/t1.c because of lack of opj_j2k_update_image_dimensions validation.
{
"license": "CC-BY-4.0",
"sources": [
{
"database_specific": {
"status": "Modified"
},
"id": "CVE-2020-6851",
"imported": "2026-07-17T22:06:23.117Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-6851",
"modified": "2026-06-17T03:23:55.203Z",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2020-6851",
"published": "2020-01-13T06:15:10.957Z"
}
]
}