CVE-2026-42030

Published: Mag 08, 2026 Last Modified: Mag 09, 2026

ExploitDB:

Other exploit source:

Google Dorks:

MEDIUM 6,1

Source: [email protected]

Attack Vector: network

Attack Complexity: low

Privileges Required: none

User Interaction: required

Scope: changed

Confidentiality: low

Integrity: low

Availability: none

Description

AI Translation Available

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.

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Incomplete

Abstraction: Variant Structure: Simple

Common Consequences

Security Scopes Affected:

Confidentiality Integrity Availability

Potential Impacts:

Read Application Data Execute Unauthorized Code Or Commands

Applicable Platforms

Technologies: Web Based, Web Server

Likelihood of Exploit: High

View CWE Details

https://github.com/MapServer/MapServer/security/advisories/…

https://github.com/MapServer/MapServer/security/advisories/GHSA-4g9f-ph64-hg2x

https://github.com/MapServer/MapServer/releases/tag/rel-8-6…

https://github.com/MapServer/MapServer/releases/tag/rel-8-6-2