CVE-2026-124031mediumCWE-843

CVE-2026-124031: medium-severity vulnerability in gpac

GPAC through 26.07.0 Type Confusion via drawable_get_aspect_2d_mpeg4

Published

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30Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 6.8
GPAC through 26.07.0 contains a type confusion vulnerability in drawable_get_aspect_2d_mpeg4() and TraverseShape() that casts a Shape's appearance node to M_Appearance without checking its node tag. Attackers can supply a crafted XMT file placing another node type, such as Conditional, in the appearance field to trigger an invalid memory read and crash MP4Box.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
gpac · gpac
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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CVE-2026-27821HIGHGPAC NHML Demuxer (dmx_nhml.c) Vulnerable to Stack Buffer OverflowEPSS 0.3%CVE-2026-33144MEDIUMGPAC MP4Box Heap Buffer Overflow Write in gf_xml_parse_bit_sequence_bs (NHML BS Parsing)EPSS 0.2%CVE-2026-124030MEDIUMGPAC through 26.07.0 Type Confusion via gf_sg_command_apply XMT Field-ReplaceEPSS —