{"id":26134,"date":"2026-09-18T08:32:17","date_gmt":"2026-09-18T00:32:17","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-54355"},"modified":"2026-09-18T08:32:17","modified_gmt":"2026-09-18T00:32:17","slug":"cve-2026-54355","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-54355","title":{"rendered":"CVE-2026-54355 &#8211; MapServer is a system for developing web-based GIS applications. From 6.0 until 8.6.4, Map"},"content":{"rendered":"<p>MapServer is a system for developing web-based GIS applications. From 6.0 until 8.6.4, MapServer&#8217;s OpenLayers HTML output for SERVICE=WMS&amp;REQUEST=GetMap&amp;FORMAT=application\/openlayers reflects an attacker-controlled X-Forwarded-Host value received as HTTP_X_FORWARDED_HOST through msBuildOnlineResource(), processLine(), and the [mapserv_onlineresource] substitution in src\/maputil.c and src\/maptemplate.c without escaping it for a single-quoted JavaScript string. When the deployment trusts the forwarded header and does not configure a fixed ows_onlineresource or MS_ONLINERESOURCE value, embedded single quotes can escape the generated URL string. An unauthenticated attacker can craft a URL that executes arbitrary JavaScript in the MapServer site origin when opened by a victim, enabling access to sessions or tokens, same-origin data and requests, and actions as the victim. This issue is fixed in version 8.6.4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MapServer is a system for developing web-based GIS applications. From 6.0 until 8.6.4, MapServer&#8217;s OpenLayers HTML output for SERVICE=WMS&amp;REQUEST=GetMap&amp;FORMAT=application\/openlayers reflects an attac<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-26134","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/26134","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26134"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=26134"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=26134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}