In GNU Libextractor 1.4, there is a NULL Pointer Dereference in the EXTRACTORnsfextractmethod function of plugins/nsfextractor.c.
In GNU Libextractor 1.4, there is an integer signedness error for the chunk size in the EXTRACTORnsfeextractmethod function in plugins/nsfeextractor.c, leading to an infinite loop for a crafted size.
In GNU Libextractor 1.4, there is a heap-based buffer overflow in the EXTRACTORpngextractmethod function in plugins/pngextractor.c, related to processiTXt and stndup.