CVE-2026-42030

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Source
https://cve.org/CVERecord?id=CVE-2026-42030
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42030.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-42030
Aliases
  • GHSA-4g9f-ph64-hg2x
Downstream
Published
2026-05-08T15:56:48Z
Modified
2026-08-12T03:51:12Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
Summary
MapServer: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in OpenLayers viewer
Details

MapServer is a system for developing web-based GIS applications. From version 6.0 to before version 8.6.2, a reflected XSS vulnerability in MapServer's WMS server allows an unauthenticated attacker to inject arbitrary HTML/JavaScript into the browser of any user who opens a crafted WMS URL. The vulnerability is triggered via FORMAT=application/openlayers combined with an unsanitized SRS parameter in WMS 1.3.0 requests. This issue has been patched in version 8.6.2.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-80"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42030.json"
}
References

Affected packages

Git / github.com/mapserver/mapserver

Affected ranges

Type
GIT
Repo
https://github.com/mapserver/mapserver
Events
Introduced
a7e04b01eab44f9f027fab5f1081eb18d9453212
Fixed
141a832fd63a62e4a82403ca2a25ea3e892f8b9b
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:osgeo:mapserver:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "6.0"
        },
        {
            "fixed": "8.6.2"
        },
        {
            "introduced": "6.0.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42030.json"