CVE-2020-29651
Aliases:GHSA-hj5v-574p-mj7cPYSEC-2020-92
Advisory lineage Upstream: 0 Downstream: 15
Modified
Published: 09 Dec 2020, 06:58
Last modified:03 Nov 2025, 21:44
Vulnerability Summary
Overall Risk (default)
medium
30/100 CVSS Score
7.5 HIGH
v3.1 (nvd)
EPSS Score
0.78% LOW
1% probability -0.07%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected
Timeline
09 Dec 2020, 06:58
Published
Vulnerability first disclosed
03 Nov 2025, 21:44
Last Modified
Vulnerability information updated
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 Metrics
- v4.0•HIGH•Score: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS Trends
Current EPSS score: 0.78%• Percentile: 74%
Affected Systems
- fedoraproject•fedora
32 | 33
- oracle•zfs_storage_appliance_kit
8.8
- PyPI•py
< 1.10.0
- pytest•py
≤ 1.9.0
References (17)
- 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/
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://lists.debian.org/debian-lts-announce/2024/11/msg00024.html
- https://nvd.nist.gov/vuln/detail/CVE-2020-29651
- https://github.com/advisories/GHSA-hj5v-574p-mj7c
- https://github.com/pypa/advisory-database/tree/main/vulns/py/PYSEC-2020-92.yaml
- https://github.com/pytest-dev/py
- 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
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AYWNYEV3FGDHPIHX4DDUDMFZ6NLCQRC4
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CHDTINIBJZ67T3W74QTBIY5LPKAXEOGR
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AYWNYEV3FGDHPIHX4DDUDMFZ6NLCQRC4/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CHDTINIBJZ67T3W74QTBIY5LPKAXEOGR/