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FKIE_CVE-2026-50126

Vulnerability from fkie_nvd - Published: 2026-08-18 17:16 - Updated: 2026-08-18 18:17
Severity
4.0 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
Adaguc-server is an open source geographical information system to visualize, combine, compare and share real-time meteorological, climatological and remote sensing data via OGC standards. Versions prior to 7.2.2 crash with a memory-safety fault when it parses a GeoJSON document whose geometry contains a malformed coordinate. The coordinate parser in `adagucserverEC/CConvertGeoJSON.cpp` indexes `pt.u.array.values[0]` and `pt.u.array.values[1]` and uses `polygon.u.array.length` as a loop bound without first validating the JSON node type or the coordinate length. A coordinate that is an empty array, a one-element array, a scalar, or `null` leads to an out-of-bounds heap read or a NULL pointer dereference. The same unchecked pattern is present in four geometry branches: `Polygon`, `LineString`, `MultiLineString` and `MultiPolygon`. The vulnerable parser runs whenever the server processes a local GeoJSON file, either a configured GeoJSON dataset or a GeoJSON file exposed through the `AutoResource` feature and requested by an unauthenticated WMS request. A crafted GeoJSON file reliably crashes the backend process that handles that request. Version 7.2.2 patches the vulnerability.
References
security-advisories@github.comhttps://github.com/KNMI/adaguc-server/commit/30dffde1a1776b994d60026f41ca620f7cad72e9
security-advisories@github.comhttps://github.com/KNMI/adaguc-server/pull/710
security-advisories@github.comhttps://github.com/KNMI/adaguc-server/releases/tag/7.2.2
security-advisories@github.comhttps://github.com/KNMI/adaguc-server/security/advisories/GHSA-mwgv-59vv-rp2m
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/KNMI/adaguc-server/security/advisories/GHSA-mwgv-59vv-rp2m
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "adaguc-server",
          "vendor": "KNMI",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.2.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Adaguc-server is an open source geographical information system to visualize, combine, compare and share real-time meteorological, climatological and remote sensing data via OGC standards. Versions prior to 7.2.2 crash with a memory-safety fault when it parses a GeoJSON document whose geometry contains a malformed coordinate. The coordinate parser in `adagucserverEC/CConvertGeoJSON.cpp` indexes `pt.u.array.values[0]` and `pt.u.array.values[1]` and uses `polygon.u.array.length` as a loop bound without first validating the JSON node type or the coordinate length. A coordinate that is an empty array, a one-element array, a scalar, or `null` leads to an out-of-bounds heap read or a NULL pointer dereference. The same unchecked pattern is present in four geometry branches: `Polygon`, `LineString`, `MultiLineString` and `MultiPolygon`. The vulnerable parser runs whenever the server processes a local GeoJSON file, either a configured GeoJSON dataset or a GeoJSON file exposed through the `AutoResource` feature and requested by an unauthenticated WMS request. A crafted GeoJSON file reliably crashes the backend process that handles that request. Version 7.2.2 patches the vulnerability."
    }
  ],
  "id": "CVE-2026-50126",
  "lastModified": "2026-08-18T18:17:52.650",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 4.0,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-50126",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-18T17:41:23.498848Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-18T17:16:58.410",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/KNMI/adaguc-server/commit/30dffde1a1776b994d60026f41ca620f7cad72e9"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/KNMI/adaguc-server/pull/710"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/KNMI/adaguc-server/releases/tag/7.2.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/KNMI/adaguc-server/security/advisories/GHSA-mwgv-59vv-rp2m"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/KNMI/adaguc-server/security/advisories/GHSA-mwgv-59vv-rp2m"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        },
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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