{"action":"Upgrade libsixel to 1.8.6-1 or later.","affected":[{"fixed":"1.8.6-1","introduced":"0"}],"component":"libsixel","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1.8.6-1"],"id":"tcs_01M5NES28M9W43J51SQ7MXN6XK","modified_at":"2026-10-26T12:00:49.753127792Z","published_at":"2021-09-14T16:15:08.403Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2020-21048","https://security-tracker.debian.org/tracker/CVE-2020-21048"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2020-21048#Debian:13/libsixel","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2020-21048"}],"summary":"An issue in the dither.c component of libsixel prior to v1.8.4 allows attackers to cause a denial of service (DOS) via a crafted PNG file."}