CVE-2017-16545
The ReadWPGImage function in coders/wpg.c in GraphicsMagick 1.3.26 does not properly validate colormapped images, which allows remote attackers to cause a denial of service (ImportIndexQuantumType invalid write and application crash) or possibly have unspecified other impact via a malformed WPG image.
Date published : 2017-11-05
http://hg.code.sf.net/p/graphicsmagick/code/rev/e8086faa52d0