{"action":"Upgrade libsixel to 1.10.3-1 or later.","affected":[{"fixed":"1.10.3-1","introduced":"0"}],"component":"libsixel","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1.10.3-1"],"id":"tcs_01M5NEGD1FV9CEZX5QEDCMFY0S","modified_at":"2026-09-11T11:00:41.265231575Z","published_at":"2020-04-12T19:15:10.367Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2020-11721","https://security-tracker.debian.org/tracker/CVE-2020-11721"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2020-11721","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2020-11721"}],"summary":"load_png in loader.c in libsixel.a in libsixel 1.8.6 has an uninitialized pointer leading to an invalid call to free, which can cause a denial of service."}