{"schema_version":"1.7.3","id":"GHSA-hj5v-574p-mj7c","published":"2021-04-20T16:39:57Z","modified":"2025-11-04T17:01:48.338149Z","aliases":["CVE-2020-29651","PYSEC-2020-92"],"summary":"py vulnerable to Regular Expression Denial of Service","details":"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.","affected":[{"package":{"name":"py","ecosystem":"PyPI","purl":"pkg:pypi/py"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.10.0"}]}],"versions":["0.8.0-alpha2","0.9.0","0.9.1","0.9.2","1.0.0","1.0.1","1.0.2","1.1.0","1.1.1","1.2.0","1.2.1","1.3.0","1.3.1","1.3.2","1.3.3","1.3.4","1.4.0","1.4.1","1.4.10","1.4.11","1.4.12","1.4.13","1.4.14","1.4.15","1.4.16","1.4.17","1.4.18","1.4.19","1.4.2","1.4.20","1.4.21","1.4.22","1.4.23","1.4.24","1.4.25","1.4.26","1.4.27","1.4.28","1.4.29","1.4.3","1.4.30","1.4.31","1.4.32","1.4.32.dev1","1.4.33","1.4.34","1.4.4","1.4.5","1.4.6","1.4.7","1.4.7.dev3","1.4.8","1.4.9","1.5.1","1.5.2","1.5.3","1.5.4","1.6.0","1.7.0","1.8.0","1.8.1","1.8.2","1.9.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/04/GHSA-hj5v-574p-mj7c/GHSA-hj5v-574p-mj7c.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-29651"},{"type":"WEB","url":"https://github.com/pytest-dev/py/issues/256"},{"type":"WEB","url":"https://github.com/pytest-dev/py/pull/257"},{"type":"WEB","url":"https://github.com/pytest-dev/py/pull/257/commits/4a9017dc6199d2a564b6e4b0aa39d6d8870e4144"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-hj5v-574p-mj7c"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/py/PYSEC-2020-92.yaml"},{"type":"PACKAGE","url":"https://github.com/pytest-dev/py"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/11/msg00024.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AYWNYEV3FGDHPIHX4DDUDMFZ6NLCQRC4"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHDTINIBJZ67T3W74QTBIY5LPKAXEOGR"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AYWNYEV3FGDHPIHX4DDUDMFZ6NLCQRC4"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CHDTINIBJZ67T3W74QTBIY5LPKAXEOGR"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpujul2022.html"}],"database_specific":{"cwe_ids":["CWE-400"],"github_reviewed":true,"github_reviewed_at":"2021-04-09T21:17:48Z","nvd_published_at":"2020-12-09T07:15:00Z","severity":"HIGH"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}