CVE-2026-77652: Heap-based Buffer Overflow

A heap-based buffer overflow vulnerability exists in the Dia diagram editor WPG file format importer. In plug-ins/wpg/wpg-import.c, the WPG import renderer allocates a fixed palette with: ren-pPal = gnew0WPGColorRGB, 256; When handling a WPGCOLORMAP record, the parser reads a start index i16 and...