{"cve":"CVE-2020-29651","nvd":{"published":"2020-12-09T07:15:12.533","modified":"2026-06-17T03:11:33.683","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":[],"references":["https://github.com/pytest-dev/py/issues/256","https://github.com/pytest-dev/py/pull/257","https://github.com/pytest-dev/py/pull/257/commits/4a9017dc6199d2a564b6e4b0aa39d6d8870e4144","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AYWNYEV3FGDHPIHX4DDUDMFZ6NLCQRC4/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHDTINIBJZ67T3W74QTBIY5LPKAXEOGR/"],"products":["fedoraproject:fedora","oracle:zfs_storage_appliance_kit","pytest:py"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-29651","score":0.04662,"percentile":0.91751,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-hj5v-574p-mj7c","url":"https://osv.dev/vulnerability/GHSA-hj5v-574p-mj7c","summary":"py vulnerable to Regular Expression Denial of Service","modified":"2025-11-04T17:01:48.338149Z","packages":[{"ecosystem":"PyPI","name":"py","purl":"pkg:pypi/py","ranges":["<1.10.0"],"fixed":["1.10.0"]}]},{"id":"PYSEC-2020-92","url":"https://osv.dev/vulnerability/PYSEC-2020-92","summary":"","modified":"2023-11-08T04:03:31.657020Z","packages":[{"ecosystem":"PyPI","name":"py","purl":"pkg:pypi/py","ranges":["<1.10.0"],"fixed":["1.10.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}