{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42030","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-23T16:05:01.708Z","datePublished":"2026-05-08T15:56:48.553Z","dateUpdated":"2026-05-08T21:26:45.294Z"},"containers":{"cna":{"title":"MapServer: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in OpenLayers viewer","problemTypes":[{"descriptions":[{"cweId":"CWE-80","lang":"en","description":"CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/MapServer/MapServer/security/advisories/GHSA-4g9f-ph64-hg2x","tags":["x_refsource_CONFIRM"],"url":"https://github.com/MapServer/MapServer/security/advisories/GHSA-4g9f-ph64-hg2x"},{"name":"https://github.com/MapServer/MapServer/releases/tag/rel-8-6-2","tags":["x_refsource_MISC"],"url":"https://github.com/MapServer/MapServer/releases/tag/rel-8-6-2"}],"affected":[{"vendor":"MapServer","product":"MapServer","versions":[{"version":">= 6.0, < 8.6.2","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-08T15:56:48.553Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-4g9f-ph64-hg2x","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/MapServer/MapServer/security/advisories/GHSA-4g9f-ph64-hg2x","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-08T17:12:03.204167Z","id":"CVE-2026-42030","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-08T21:26:45.294Z"}}]}}