{"id":"DEBIAN-CVE-2026-5673","details":"A flaw was found in libtheora. This heap-based out-of-bounds read vulnerability exists within the AVI (Audio Video Interleave) parser, specifically in the avi_parse_input_file() function. A local attacker could exploit this by tricking a user into opening a specially crafted AVI file containing a truncated header sub-chunk. This could lead to a denial-of-service (application crash) or potentially leak sensitive information from the heap.","modified":"2026-09-14T17:03:20.769368783Z","published":"2026-04-06T10:16:03.400Z","upstream":["CVE-2026-5673"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-5673"}],"affected":[{"package":{"name":"libtheora","ecosystem":"Debian:12","purl":"pkg:deb/debian/libtheora?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.1+dfsg.1-16.1","1.1.1+dfsg.1-16.1+deb12u1","1.1.1+dfsg.1-17","1.2.0+dfsg-1","1.2.0+dfsg-2","1.2.0+dfsg-3","1.2.0+dfsg-4","1.2.0+dfsg-5","1.2.0+dfsg-6","1.2.0~alpha1+dfsg-1","1.2.0~alpha1+dfsg-2","1.2.0~alpha1+dfsg-3","1.2.0~alpha1+dfsg-4","1.2.0~alpha1+dfsg-5","1.2.0~alpha1+dfsg-6"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5673.json"}},{"package":{"name":"libtheora","ecosystem":"Debian:13","purl":"pkg:deb/debian/libtheora?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.0+dfsg-1","1.2.0+dfsg-2","1.2.0+dfsg-3","1.2.0+dfsg-4","1.2.0+dfsg-5","1.2.0+dfsg-6","1.2.0~alpha1+dfsg-6"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5673.json"}},{"package":{"name":"libtheora","ecosystem":"Debian:14","purl":"pkg:deb/debian/libtheora?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.0+dfsg-1","1.2.0+dfsg-2","1.2.0+dfsg-3","1.2.0+dfsg-4","1.2.0+dfsg-5","1.2.0+dfsg-6","1.2.0~alpha1+dfsg-6"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5673.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"}]}