Open Chinese Convert (OpenCC) 1.0.5 allows attackers to cause a denial of service (segmentation fault) because BinaryDict::NewFromFile in BinaryDict.cpp may have out-of-bounds keyOffset and valueOffset values via a crafted .ocd file.
"https://github.com/pypa/advisory-database/blob/main/vulns/opencc-py/PYSEC-2018-153.yaml"