CVE-2026-120210
Medium
Description
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.
SeverityMedium
CVSS4.3
Exploit probability—
ProductFFmpeg
PublishedOct 31, 2026
First seenNov 4, 2026
Weakness typeCWE-22Path traversal
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| FFmpeg FFmpeg | 5.0 ≤ v ≤ 9.0.2 | — |
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