The MergeTrack function in GPAC 1.0.1 allows attackers to cause a denial of service (NULL pointer dereference) via a crafted file in the MP4Box command.
https://github.com/gpac/gpac/issues/1736
https://github.com/gpac/gpac/commit/df8fffd839fe5ae9acd82d26fd48280a397411d9