CVE-2026-33021 | saitoha libsixel up to 1.8.7-r0 SIXEL Encoder sixel_encoder_encode_bytes use after free (GHSA-j6m5-2cc7-3whc)

A vulnerability classified as critical was found in saitoha libsixel up to 1.8.7-r0. This impacts the function sixel_encoder_encode_bytes of the component SIXEL Encoder. The manipulation results in use after free.

This vulnerability is known as CVE-2026-33021. It is possible to launch the attack remotely. No exploit is available.

Upgrading the affected component is advised.VulDB Recent EntriesRead More