Use After Free
libexpat before 2.4.9 has a use-after-free vulnerability in the "doContent" function in "xmlparse.c".
CWE-416 - Use After Free
Use-after-free (UaF) vulnerability occurs when the application is using a pointer to memory that has been freed. Any attempt to read/write to a buffer after it is de-allocated allows memory corruption, sensitive information exposure, and can potentially lead to arbitrary code execution.