(1) core/tests/testmemmap.py, (2) core/tests/testmultiarray.py, (3) f2py/f2py2e.py, and (4) lib/tests/test_io.py in NumPy before 1.8.1 allow local users to write to arbitrary files via a symlink attack on a temporary file.
"https://github.com/pypa/advisory-database/blob/main/vulns/numpy/PYSEC-2018-34.yaml"