CVE-2019-20024: Saitoha Libsixel

Medium severity, CVSS 6.5. EPSS: 1% chance of exploitation in the next 30 days.

A heap-based buffer overflow was discovered in image_buffer_resize in fromsixel.c in libsixel before 1.8.4.

Affected products

• Saitoha Libsixel: before 1.8.4 (fixed in 1.8.4)

Published 2019-12-27. Last modified 2026-06-17.