{
  "cveId": "CVE-2026-45104",
  "url": "https://patchblox.com/security/cve/CVE-2026-45104",
  "summary": "CVE-2026-45104 is fixed in mapserver on 1 platform by DEBIAN-CVE-2026-45104 (version 8.6.3-1), released June 24, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "mapserver: MapServer is a system for developing web-based GIS applications",
  "description": "MapServer is a system for developing web-based GIS applications. From 6.4.0 to before 8.6.3, msSLDParseUserStyle always calls _SLDApplyRuleValues(psRule, psLayer, 1); for any \u003CRule\u003E carrying \u003CElseFilter/\u003E \u2014 it assumes msSLDParseRule added one class. When the rule has no symbolizer (a structurally valid SLD), msSLDParseRule adds zero, and _SLDApplyRuleValues ends up indexing _class[-1], resulting in a NULL pointer dereference. A 200-byte well-formed SLD via the WMS SLD_BODY= parameter is enough to trigger this, no auth required. This vulnerability is fixed in 8.6.3.",
  "published": "2026-05-27T20:16:38Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.0032,
  "epssPercentile": 0.25192,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "mapserver",
      "release": "Debian 14",
      "fixedVersion": "8.6.3-1",
      "fix": "DEBIAN-CVE-2026-45104",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-45104",
      "released": "2026-06-24T14:07:24Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}