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

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

https://cvefeed.io/rssfeed/latest.atom / Fri, 03/27/2026 - 02:08
CVE ID :CVE-2026-33721
Published : March 27, 2026, 12:15 a.m. | 50 minutes ago
Description :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.
Severity: 0.0 | NA
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