Upstream information

CVE-2026-45104 at MITRE

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 <Rule> carrying <ElseFilter/> - 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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (GitHub)
Base Score 7.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1266663 [NEW]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
openSUSE Leap 16.0
  • libjavamapscript >= 8.6.3-bp160.1.1
  • libmapserver2 >= 8.6.3-bp160.1.1
  • mapserver >= 8.6.3-bp160.1.1
  • mapserver-devel >= 8.6.3-bp160.1.1
  • perl-mapscript >= 8.6.3-bp160.1.1
  • php-mapscriptng >= 8.6.3-bp160.1.1
  • python313-mapserver >= 8.6.3-bp160.1.1
 Patchnames:
openSUSE-Leap-16.0-packagehub-287

SUSE Timeline for this CVE

CVE page created: Thu May 28 00:01:27 2026
CVE page last modified: Tue Jun 2 11:37:06 2026