{"id":"CVE-2026-120210","summary":"FFmpeg 5.0 through 9.0.2 Path Traversal via IMF Demuxer ASSETMAP Path","details":"FFmpeg 5.0 through 9.0.2 contains a path traversal vulnerability in the IMF demuxer that allows attackers to open files outside the package via unvalidated ASSETMAP Path elements. Attackers can supply a crafted IMF package with '..' or absolute paths to demux local MXF files, probe file existence and size, or trigger server-side requests.","modified":"2026-11-04T02:36:36.761270586Z","published":"2026-10-31T17:25:56.847Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-22"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120210.json"},"references":[{"type":"WEB","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120210.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120210"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/ffmpeg-5.0-through-9.0.2-path-traversal-via-imf-demuxer-assetmap-path"},{"type":"REPORT","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25341"},{"type":"PACKAGE","url":"https://github.com/FFmpeg/FFmpeg"},{"type":"ARTICLE","url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavformat/imfdec.c#L273"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ffmpeg/ffmpeg","events":[{"introduced":"390d6853d0ef408007feb39c0040682c81c02751"},{"last_affected":"946fcce07b6dcd0331c8cc609192aeff5e1924f8"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"5.0"},{"last_affected":"9.0.2"}]},{"range":[{"introduced":"5.0"},{"last_affected":"9.0.2"}],"source":"DESCRIPTION"}]}}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-120210.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}]}