CVE-2026-42030

Description

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.

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Produits concernés

• MapServer
• Osgeo mapserver

Scores CVSS

Faiblesses (CWE)

• CWE-80

Références

• https://github.com/MapServer/MapServer/releases/tag/rel-8-6-2 ProductRelease Notes
• https://github.com/MapServer/MapServer/security/advisories/GHSA-4g9f-ph64-hg2x ExploitVendor Advisory
• https://github.com/MapServer/MapServer/security/advisories/GHSA-4g9f-ph64-hg2x ExploitVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories