CVE-2026-50126 (GCVE-0-2026-50126)
Vulnerability from cvelistv5 – Published: 2026-08-18 16:36 – Updated: 2026-08-18 17:41
VLAI
EPSS
VEX
Title
adaguc-server GeoJSON coordinate parser (CConvertGeoJSON.cpp) vulnerable to out-of-bounds read and NULL pointer dereference
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.
Severity
4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 17:41 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/KNMI/adaguc-server/security/ad… | x_refsource_CONFIRM |
| https://github.com/KNMI/adaguc-server/pull/710 | x_refsource_MISC |
| https://github.com/KNMI/adaguc-server/commit/30df… | x_refsource_MISC |
| https://github.com/KNMI/adaguc-server/releases/ta… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| KNMI | adaguc-server |
Affected:
< 7.2.2
|
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-50126",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-18T17:41:23.498848Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T17:41:34.517Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/KNMI/adaguc-server/security/advisories/GHSA-mwgv-59vv-rp2m"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "adaguc-server",
"vendor": "KNMI",
"versions": [
{
"status": "affected",
"version": "\u003c 7.2.2"
}
]
}
],
"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."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 4,
"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"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-125",
"description": "CWE-125: Out-of-bounds Read",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476: NULL Pointer Dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T16:36:14.618Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/KNMI/adaguc-server/security/advisories/GHSA-mwgv-59vv-rp2m",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/KNMI/adaguc-server/security/advisories/GHSA-mwgv-59vv-rp2m"
},
{
"name": "https://github.com/KNMI/adaguc-server/pull/710",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/KNMI/adaguc-server/pull/710"
},
{
"name": "https://github.com/KNMI/adaguc-server/commit/30dffde1a1776b994d60026f41ca620f7cad72e9",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/KNMI/adaguc-server/commit/30dffde1a1776b994d60026f41ca620f7cad72e9"
},
{
"name": "https://github.com/KNMI/adaguc-server/releases/tag/7.2.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/KNMI/adaguc-server/releases/tag/7.2.2"
}
],
"source": {
"advisory": "GHSA-mwgv-59vv-rp2m",
"discovery": "UNKNOWN"
},
"title": "adaguc-server GeoJSON coordinate parser (CConvertGeoJSON.cpp) vulnerable to out-of-bounds read and NULL pointer dereference"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-50126",
"datePublished": "2026-08-18T16:36:14.618Z",
"dateReserved": "2026-06-03T18:49:32.275Z",
"dateUpdated": "2026-08-18T17:41:34.517Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-50126",
"date": "2026-09-30",
"epss": "0.00177",
"percentile": "0.06542"
},
"nvd": {
"cve": {
"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": "2026-09-18T20:09:01.757",
"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": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-125"
},
{
"lang": "en",
"value": "CWE-476"
}
],
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-50126",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-18T17:41:23.498848Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T17:41:06.367Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/KNMI/adaguc-server/security/advisories/GHSA-mwgv-59vv-rp2m"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "adaguc-server",
"vendor": "KNMI",
"versions": [
{
"status": "affected",
"version": "\u003c 7.2.2"
}
]
}
],
"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."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 4,
"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"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-125",
"description": "CWE-125: Out-of-bounds Read",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476: NULL Pointer Dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T16:36:14.618Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/KNMI/adaguc-server/security/advisories/GHSA-mwgv-59vv-rp2m",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/KNMI/adaguc-server/security/advisories/GHSA-mwgv-59vv-rp2m"
},
{
"name": "https://github.com/KNMI/adaguc-server/pull/710",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/KNMI/adaguc-server/pull/710"
},
{
"name": "https://github.com/KNMI/adaguc-server/commit/30dffde1a1776b994d60026f41ca620f7cad72e9",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/KNMI/adaguc-server/commit/30dffde1a1776b994d60026f41ca620f7cad72e9"
},
{
"name": "https://github.com/KNMI/adaguc-server/releases/tag/7.2.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/KNMI/adaguc-server/releases/tag/7.2.2"
}
],
"source": {
"advisory": "GHSA-mwgv-59vv-rp2m",
"discovery": "UNKNOWN"
},
"title": "adaguc-server GeoJSON coordinate parser (CConvertGeoJSON.cpp) vulnerable to out-of-bounds read and NULL pointer dereference"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-50126",
"datePublished": "2026-08-18T16:36:14.618Z",
"dateReserved": "2026-06-03T18:49:32.275Z",
"dateUpdated": "2026-08-18T17:41:34.517Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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
| Author | Source | Type | Date | Other |
|---|
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.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…