Medium severity5.5NVD Advisory· Published Nov 6, 2026· Updated Nov 6, 2026
CVE-2026-124030
CVE-2026-124030
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.
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Affected products
1Patches
Vulnerability mechanics
References
5- github.com/gpac/gpac/blob/v26.07.0/src/scenegraph/commands.cnvd
- github.com/gpac/gpac/commit/1359c4da9329cedceeb8fcfeab6d97e0927236e1nvd
- github.com/gpac/gpac/issues/4032nvd
- github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/224/224_gf_sg_command_apply_scenegraph_commands_c_346.xmtnvd
- www.vulncheck.com/advisories/gpac-through-26.07.0-type-confusion-via-gf-sg-command-apply-xmt-field-replacenvd
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