{"action":"Upgrade libsixel to 1:1.8.7-r2-1 or later.","affected":[{"fixed":"1:1.8.7-r2-1","introduced":"0"}],"component":"libsixel","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:1.8.7-r2-1"],"id":"tcs_01M5NRPXKAAR3GD92P3AN6DHAC","modified_at":"2026-10-01T03:03:10.278665572Z","published_at":"2026-04-14T23:16:27.660Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-33021","https://security-tracker.debian.org/tracker/CVE-2026-33021"],"severity":{"label":"high","score":7.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-33021#Debian:14/libsixel","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-33021"}],"summary":"libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. Versions 1.8.7 and prior contain a use-after-free vulnerability in sixel_encoder_encode_bytes() because sixel_frame_init("}