DEBIAN-CVE-2026-33721
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-33721
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33721.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-33721
- Upstream
- Published
- 2026-03-27T01:16:19Z
- Modified
- 2026-09-14T17:03:08Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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 more than 100 Threshold elements inside a ColorMap/Categorize structure (commonly reachable via WMS GetMap with SLD_BODY). Version 8.6.1 patches the issue.
- References
Affected packages
Debian:12 / mapserver
Package
- Name
- mapserver
- Purl
- pkg:deb/debian/mapserver?arch=source&distro=bookworm
Debian:13 / mapserver
Package
- Name
- mapserver
- Purl
- pkg:deb/debian/mapserver?arch=source&distro=trixie
Debian:14 / mapserver
Package
- Name
- mapserver
- Purl
- pkg:deb/debian/mapserver?arch=source&distro=forky
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed8.6.1-1