Use After Free
njs through 0.7.0, used in NGINX, was discovered to contain a heap use-after-free in njs_await_fulfilled.
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.