CVE-2020-29651

python-py: ReDoS in the py.path.svnwc component via mailicious input to blame functionality

Published Dec 9, 2020 CVSS 3.1 · 7.5 High EPSS 4.5% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3966-1 pypy3 security update
EUVD EUVD EUVD-2020-0152 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.
Github GHSA Github GHSA GHSA-hj5v-574p-mj7c py vulnerable to Regular Expression Denial of Service
Ubuntu USN Ubuntu USN USN-5138-1 python-py vulnerability
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00848}

epss

{'score': 0.00781}

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Nov 3, 2025, 9:44 PM
Reserved
Dec 9, 2020, 12:00 AM
Status
Modified
Published
Dec 9, 2020, 7:15 AM
Modified
Jun 17, 2026, 3:11 AM
Severity
Low
Public date
Sep 3, 2020, 12:00 AM