pngcrush-installer is an installer for Pngcrush. pngcrush-installer versions below 1.8.10 download binary resources over HTTP, which leaves it vulnerable to MITM attacks. It may be possible to cause remote code execution (RCE) by swapping out the requested binary with an attacker controlled binary if the attacker is on the network or positioned in between the user and the remote server.

Off-by-one error in the pngcrush_measure_idat function in pngcrush.c in pngcrush before 1.7.84 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted PNG file.

Double-free vulnerability in the sPLT chunk structure and png.c in pngcrush before 1.7.87 allows attackers to have unspecified impact via unknown vectors.