CVE-2026-124030
Medium
Description
GPAC through 26.07.0 contains a type confusion vulnerability in gf_sg_command_apply() in src/scenegraph/commands.c that fails to verify BIFS field-replace command types match target node fields. Attackers can supply a crafted XMT file opened with MP4Box, such as via chapter import, causing gf_sg_vrml_field_clone() to memcpy from invalid pointers and crash.
SeverityMedium
CVSS5.5
Exploit probability—
ProductGpac
PublishedNov 6, 2026
First seenNov 6, 2026
Weakness typeCWE-843CWE-843
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gpac gpac | v ≤ 26.07.0 | — |
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