A denial of service via regular expression in the py.path.svnwc component of py (aka python-py) through 1.9.0 could be used by attackers to cause a compute-time denial of service attack by supplying malicious input to the blame functionality.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-29651.json"