GHSA-PR85-W493-9W3X

Vulnerability from github – Published: 2026-08-18 20:11 – Updated: 2026-08-18 20:11
VLAI
Summary
resdata has Classic Buffer Overflow, Improper Validation of Array Index, NULL Pointer Dereference and Out-of-bounds Read
Details

Impact

Prior 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.

Patches

The bug has been patched starting with version 6.2.9.

Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "resdata"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-55209"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120",
      "CWE-125",
      "CWE-129",
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-18T20:11:04Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "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.",
  "id": "GHSA-pr85-w493-9w3x",
  "modified": "2026-08-18T20:11:04Z",
  "published": "2026-08-18T20:11:04Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/equinor/resdata/security/advisories/GHSA-pr85-w493-9w3x"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/equinor/resdata"
    },
    {
      "type": "WEB",
      "url": "https://github.com/equinor/resdata/releases/tag/6.2.9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "resdata has Classic Buffer Overflow, Improper Validation of Array Index, NULL Pointer Dereference and Out-of-bounds Read"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.