{
"id": "GHSA-pr85-w493-9w3x",
"aliases": [
"CVE-2026-55209"
],
"details": "### Impact\nPrior to version 6.2.9 resdata would not correctly validate input in GRDECL files. The severity rating assumes that resdata is used to parse untrused files in a networking context such as a webservice.\n\n### Patches\nThe bug has been patched starting with version 6.2.9.",
"summary": "resdata has Classic Buffer Overflow, Improper Validation of Array Index, NULL Pointer Dereference and Out-of-bounds Read",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.2.9"
}
]
}
],
"package": {
"name": "resdata",
"ecosystem": "PyPI"
}
}
],
"modified": "2026-08-18T20:11:04Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"published": "2026-08-18T20:11:04Z",
"references": [
{
"url": "https://github.com/equinor/resdata/security/advisories/GHSA-pr85-w493-9w3x",
"type": "WEB"
},
{
"url": "https://github.com/equinor/resdata",
"type": "PACKAGE"
},
{
"url": "https://github.com/equinor/resdata/releases/tag/6.2.9",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-120",
"CWE-125",
"CWE-129",
"CWE-476"
],
"severity": "CRITICAL",
"github_reviewed": true,
"nvd_published_at": null,
"github_reviewed_at": "2026-08-18T20:11:04Z"
}
}