CVE-2026-45104 MapServer: NULL pointer dereference in SLD `<ElseFilter>` rule parsing reachable via WMS `SLD_BODY`

MapServer is a system for developing web-based GIS applications. From 6.4.0 to before 8.6.3, msSLDParseUserStyle always calls SLDApplyRuleValuespsRule, psLayer, 1; for any carrying — it assumes msSLDParseRule added one class. When the rule has no symbolizer a structurally valid SLD, msSLDParseRul...

CVE-2026-45104 MapServer: NULL pointer dereference in SLD `<ElseFilter>` rule parsing reachable via WMS `SLD_BODY`

MapServer is a system for developing web-based GIS applications. From 6.4.0 to before 8.6.3, msSLDParseUserStyle always calls SLDApplyRuleValuespsRule, psLayer, 1; for any carrying — it assumes msSLDParseRule added one class. When the rule has no symbolizer a structurally valid SLD, msSLDParseRul...

CVE-2026-45104

MapServer is a system for developing web-based GIS applications. From 6.4.0 to before 8.6.3, msSLDParseUserStyle always calls SLDApplyRuleValuespsRule, psLayer, 1; for any carrying — it assumes msSLDParseRule added one class. When the rule has no symbolizer a structurally valid SLD, msSLDParseRul...

CVE-2026-33721 MapServer has heap buffer overflow in SLD `Categorize` Threshold parsing

MapServer is a system for developing web-based GIS applications. Starting in version 4.2 and prior to version 8.6.1, a heap-buffer-overflow write in MapServer’s SLD Styled Layer Descriptor parser lets a remote, unauthenticated attacker crash the MapServer process by sending a crafted SLD with mor...

CVE-2025-21621 GeoServer Reflected Cross-Site Scripting (XSS) vulnerability in WMS GetFeatureInfo HTML format

GeoServer is an open source server that allows users to share and edit geospatial data. Prior to version 2.25.0, a reflected cross-site scripting XSS vulnerability exists in the WMS GetFeatureInfo HTML output format that enables a remote attacker to execute arbitrary JavaScript code in a victim's...

CVE-2025-21621

CVE-2025-21621 affects GeoServer prior to version 2.25.0, with a reflected XSS vulnerability in the WMS GetFeatureInfo HTML output format. This could enable arbitrary JavaScript execution in a victim’s browser via specially crafted SLD_BODY parameters. The issue has been patched in 2.25.0. Exploi...

CVE-2025-21621 GeoServer Reflected Cross-Site Scripting (XSS) vulnerability in WMS GetFeatureInfo HTML format

GeoServer is an open source server that allows users to share and edit geospatial data. Prior to version 2.25.0, a reflected cross-site scripting XSS vulnerability exists in the WMS GetFeatureInfo HTML output format that enables a remote attacker to execute arbitrary JavaScript code in a victim's...

GeoServer has a Reflected Cross-Site Scripting (XSS) vulnerability in its WMS GetFeatureInfo HTML format

Summary A reflected cross-site scripting XSS vulnerability exists in the WMS GetFeatureInfo HTML output format that enables a remote attacker to execute arbitrary JavaScript code in a victim's browser through specially crafted SLDBODY parameters. Details The WMS service setting that controls HTML...

GHSA-W66H-J855-QR72 GeoServer has a Reflected Cross-Site Scripting (XSS) vulnerability in its WMS GetFeatureInfo HTML format

Summary A reflected cross-site scripting XSS vulnerability exists in the WMS GetFeatureInfo HTML output format that enables a remote attacker to execute arbitrary JavaScript code in a victim's browser through specially crafted SLDBODY parameters. Details The WMS service setting that controls HTML...