{"id":"CVE-2020-29651","aliases":["GHSA-hj5v-574p-mj7c","PYSEC-2020-92"],"url":"https://o3.security/vulnerability/CVE-2020-29651","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.","published":"2020-12-09T07:15:12.533Z","modified":"2026-10-05T10:26:49.984508302Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"py","fixedVersion":"1.10.0"}],"fix":{"url":"https://github.com/pytest-dev/py/pull/257/commits/4a9017dc6199d2a564b6e4b0aa39d6d8870e4144","label":"pytest-dev/py#257"},"references":[{"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":"ADVISORY","url":"https://github.com/pytest-dev/py/issues/256"},{"type":"ADVISORY","url":"https://github.com/pytest-dev/py/pull/257"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpujul2022.html"},{"type":"FIX","url":"https://github.com/pytest-dev/py/pull/257/commits/4a9017dc6199d2a564b6e4b0aa39d6d8870e4144"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-29651"},{"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.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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-05T10:26:49.984508302Z"}}