CVE-2018-19759: Saitoha Libsixel

Medium severity, CVSS 5.5. EPSS: 0.7% chance of exploitation in the next 30 days.

There is a heap-based buffer over-read at stb_image_write.h (function: stbi_write_png_to_mem) in libsixel 1.8.2 that will cause a denial of service.

Affected products

Published 2018-11-30. Last modified 2026-06-17.