adaguc-server GeoJSON coordinate parser (CConvertGeoJSON.cpp) vulnerable to out-of-bounds read and NULL pointer dereference

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-50126
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-18 17:16:58 UTC
Updated2026-10-22 22:10:00 UTC
DescriptionAdaguc-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.

Risk And Classification

Primary CVSS: v3.1 4 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS: 0.001770000 probability, percentile 0.069040000 (date 2026-10-22)

Problem Types: CWE-125 | CWE-476 | CWE-125 CWE-125: Out-of-bounds Read | CWE-476 CWE-476: NULL Pointer Dereference

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.1CNADECLARED4MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA KNMI Adaguc-server affected < 7.2.2 Not specified

References

ReferenceSourceLinkTags
github.com/KNMI/adaguc-server/security/advisories/GHSA-mwgv-59vv-rp2m 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/KNMI/adaguc-server/releases/tag/7.2.2 [email protected] github.com
github.com/KNMI/adaguc-server/pull/710 [email protected] github.com
github.com/KNMI/adaguc-server/commit/30dffde1a1776b994d60026f41ca620f7ca... [email protected] github.com
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