{"id":"CVE-2020-21548","details":"Libsixel 1.8.3 contains a heap-based buffer overflow in the sixel_encode_highcolor function in tosixel.c.","modified":"2026-07-08T19:02:06.098961Z","published":"2021-09-17T21:15:07.360Z","references":[{"type":"FIX","url":"https://github.com/saitoha/libsixel/issues/116"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/saitoha/libsixel","events":[{"introduced":"9d9d1863f5c96f48d679aa666e915592c5b378d0"},{"last_affected":"9d9d1863f5c96f48d679aa666e915592c5b378d0"}],"database_specific":{"cpe":"cpe:2.3:a:saitoha:libsixel:1.8.3:*:*:*:*:*:*:*","extracted_events":[{"introduced":"1.8.3"},{"last_affected":"1.8.3"}],"source":"CPE_STRING"}}],"versions":["1.8.3","v1.8.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-21548.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}