CVE-2020-21049

MEDIUM 6.5CVE-2020-21049 · Published 14/09/2021 · updated 17/06/2026

In short

CVE-2020-21049 is a MEDIUM (CVSS 6.5) vulnerability affecting libsixel (saitoha).
Chance of exploitation in the next 30 days (EPSS): 1.4%, higher than 72.1% of all vulnerabilities.
Fix: update to 1.8.5 or later.

Package	Affected versions	Patched versions
libsixel saitoha	`< 1.8.5`	`1.8.5`

An invalid read in the stb_image.h component of libsixel prior to v1.8.5 allows attackers to cause a denial of service (DOS) via a crafted PSD file.

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Package

Affected versions

Patched versions

< 1.8.5

1.8.5

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