CVE-2020-29651

Name: CVE-2020-29651
Creator: NVD / NIST
Published: 2020-12-09T07:15:12.533+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 4.61%

Last modified Jun 17, 2026

CVE-2020-29651 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 4.61% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

4.61%

90.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Pytest	Py	<= 1.9.0
Fedoraproject	Fedora	32
Fedoraproject	Fedora	33
Oracle	Zfs Storage Appliance Kit	8.8

References

https://github.com/pytest-dev/py/issues/256Third Party Advisory
https://github.com/pytest-dev/py/pull/257Third Party Advisory
https://github.com/pytest-dev/py/pull/257/commits/4a9017dc6199d2a564b6e4b0aa39d6d8870e4144Patch, Third Party Advisory
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.htmlThird Party Advisory
https://github.com/pytest-dev/py/issues/256Third Party Advisory
https://github.com/pytest-dev/py/pull/257Third Party Advisory
https://github.com/pytest-dev/py/pull/257/commits/4a9017dc6199d2a564b6e4b0aa39d6d8870e4144Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/11/msg00024.html
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.htmlThird Party Advisory

Timeline

Published: Dec 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-29651?

How severe is CVE-2020-29651?

CVE-2020-29651 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.61% probability of exploitation in the next 30 days.

How do I fix CVE-2020-29651?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-29651?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST